Add inttypes.h

Even if U-Boot does not use this, some libraries do. Add back this header
file so that the build does not fall back to using the host version, which
may include stdint.h and break the build due to conflicts with uint64_t,
etc.

This partially reverts commit dee37fc99d94 ("Remove <inttypes.h> includes
and PRI* usages in printf() entirely")

The only change from the file that was in U-Boot until recently is that it
now comes twice as close to passing checkpatch. The remaining warnings
pertain to the typedefs, which checkpatch does not like.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/include/inttypes.h b/include/inttypes.h
new file mode 100644
index 0000000..dcb6785
--- /dev/null
+++ b/include/inttypes.h
@@ -0,0 +1,271 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 1997-2001, 2004, 2007 Free Software Foundation, Inc.
+ *
+ * This file is taken from the GNU C Library v2.15, with the unimplemented
+ * functions removed and a few style fixes.
+ */
+
+/*
+ *	ISO C99: 7.8 Format conversion of integer types	<inttypes.h>
+ */
+
+#ifndef _INTTYPES_H
+#define _INTTYPES_H	1
+
+#include <linux/compiler.h>
+
+/* Get a definition for wchar_t.  But we must not define wchar_t itself.  */
+#ifndef ____gwchar_t_defined
+# ifdef __cplusplus
+#  define __gwchar_t wchar_t
+# elif defined __WCHAR_TYPE__
+typedef __WCHAR_TYPE__ __gwchar_t;
+# else
+#  define __need_wchar_t
+#  include <linux/stddef.h>
+typedef wchar_t __gwchar_t;
+# endif
+# define ____gwchar_t_defined	1
+#endif
+
+/*
+ * The ISO C99 standard specifies that these macros must only be defined if
+ * explicitly requested
+ */
+#if !defined __cplusplus || defined __STDC_FORMAT_MACROS
+
+/* linux/types.h always uses long long for 64-bit and long for uintptr_t */
+# define __PRI64_PREFIX	"ll"
+# define __PRIPTR_PREFIX	"l"
+
+/* Macros for printing format specifiers.  */
+
+/* Decimal notation.  */
+# define PRId8		"d"
+# define PRId16		"d"
+# define PRId32		"d"
+# define PRId64		__PRI64_PREFIX "d"
+
+# define PRIdLEAST8	"d"
+# define PRIdLEAST16	"d"
+# define PRIdLEAST32	"d"
+# define PRIdLEAST64	__PRI64_PREFIX "d"
+
+# define PRIdFAST8	"d"
+# define PRIdFAST16	__PRIPTR_PREFIX "d"
+# define PRIdFAST32	__PRIPTR_PREFIX "d"
+# define PRIdFAST64	__PRI64_PREFIX "d"
+
+# define PRIi8		"i"
+# define PRIi16		"i"
+# define PRIi32		"i"
+# define PRIi64		__PRI64_PREFIX "i"
+
+# define PRIiLEAST8	"i"
+# define PRIiLEAST16	"i"
+# define PRIiLEAST32	"i"
+# define PRIiLEAST64	__PRI64_PREFIX "i"
+
+# define PRIiFAST8	"i"
+# define PRIiFAST16	__PRIPTR_PREFIX "i"
+# define PRIiFAST32	__PRIPTR_PREFIX "i"
+# define PRIiFAST64	__PRI64_PREFIX "i"
+
+/* Octal notation.  */
+# define PRIo8		"o"
+# define PRIo16		"o"
+# define PRIo32		"o"
+# define PRIo64		__PRI64_PREFIX "o"
+
+# define PRIoLEAST8	"o"
+# define PRIoLEAST16	"o"
+# define PRIoLEAST32	"o"
+# define PRIoLEAST64	__PRI64_PREFIX "o"
+
+# define PRIoFAST8	"o"
+# define PRIoFAST16	__PRIPTR_PREFIX "o"
+# define PRIoFAST32	__PRIPTR_PREFIX "o"
+# define PRIoFAST64	__PRI64_PREFIX "o"
+
+/* Unsigned integers.  */
+# define PRIu8		"u"
+# define PRIu16		"u"
+# define PRIu32		"u"
+# define PRIu64		__PRI64_PREFIX "u"
+
+# define PRIuLEAST8	"u"
+# define PRIuLEAST16	"u"
+# define PRIuLEAST32	"u"
+# define PRIuLEAST64	__PRI64_PREFIX "u"
+
+# define PRIuFAST8	"u"
+# define PRIuFAST16	__PRIPTR_PREFIX "u"
+# define PRIuFAST32	__PRIPTR_PREFIX "u"
+# define PRIuFAST64	__PRI64_PREFIX "u"
+
+/* lowercase hexadecimal notation.  */
+# define PRIx8		"x"
+# define PRIx16		"x"
+# define PRIx32		"x"
+# define PRIx64		__PRI64_PREFIX "x"
+
+# define PRIxLEAST8	"x"
+# define PRIxLEAST16	"x"
+# define PRIxLEAST32	"x"
+# define PRIxLEAST64	__PRI64_PREFIX "x"
+
+# define PRIxFAST8	"x"
+# define PRIxFAST16	__PRIPTR_PREFIX "x"
+# define PRIxFAST32	__PRIPTR_PREFIX "x"
+# define PRIxFAST64	__PRI64_PREFIX "x"
+
+/* UPPERCASE hexadecimal notation.  */
+# define PRIX8		"X"
+# define PRIX16		"X"
+# define PRIX32		"X"
+# define PRIX64		__PRI64_PREFIX "X"
+
+# define PRIXLEAST8	"X"
+# define PRIXLEAST16	"X"
+# define PRIXLEAST32	"X"
+# define PRIXLEAST64	__PRI64_PREFIX "X"
+
+# define PRIXFAST8	"X"
+# define PRIXFAST16	__PRIPTR_PREFIX "X"
+# define PRIXFAST32	__PRIPTR_PREFIX "X"
+# define PRIXFAST64	__PRI64_PREFIX "X"
+
+/* Macros for printing `intmax_t' and `uintmax_t'.  */
+# define PRIdMAX	__PRI64_PREFIX "d"
+# define PRIiMAX	__PRI64_PREFIX "i"
+# define PRIoMAX	__PRI64_PREFIX "o"
+# define PRIuMAX	__PRI64_PREFIX "u"
+# define PRIxMAX	__PRI64_PREFIX "x"
+# define PRIXMAX	__PRI64_PREFIX "X"
+
+/* Macros for printing `intptr_t' and `uintptr_t'.  */
+# define PRIdPTR	__PRIPTR_PREFIX "d"
+# define PRIiPTR	__PRIPTR_PREFIX "i"
+# define PRIoPTR	__PRIPTR_PREFIX "o"
+# define PRIuPTR	__PRIPTR_PREFIX "u"
+# define PRIxPTR	__PRIPTR_PREFIX "x"
+# define PRIXPTR	__PRIPTR_PREFIX "X"
+
+/* Macros for scanning format specifiers.  */
+
+/* Signed decimal notation.  */
+# define SCNd8		"hhd"
+# define SCNd16		"hd"
+# define SCNd32		"d"
+# define SCNd64		__PRI64_PREFIX "d"
+
+# define SCNdLEAST8	"hhd"
+# define SCNdLEAST16	"hd"
+# define SCNdLEAST32	"d"
+# define SCNdLEAST64	__PRI64_PREFIX "d"
+
+# define SCNdFAST8	"hhd"
+# define SCNdFAST16	__PRIPTR_PREFIX "d"
+# define SCNdFAST32	__PRIPTR_PREFIX "d"
+# define SCNdFAST64	__PRI64_PREFIX "d"
+
+/* Signed decimal notation.  */
+# define SCNi8		"hhi"
+# define SCNi16		"hi"
+# define SCNi32		"i"
+# define SCNi64		__PRI64_PREFIX "i"
+
+# define SCNiLEAST8	"hhi"
+# define SCNiLEAST16	"hi"
+# define SCNiLEAST32	"i"
+# define SCNiLEAST64	__PRI64_PREFIX "i"
+
+# define SCNiFAST8	"hhi"
+# define SCNiFAST16	__PRIPTR_PREFIX "i"
+# define SCNiFAST32	__PRIPTR_PREFIX "i"
+# define SCNiFAST64	__PRI64_PREFIX "i"
+
+/* Unsigned decimal notation.  */
+# define SCNu8		"hhu"
+# define SCNu16		"hu"
+# define SCNu32		"u"
+# define SCNu64		__PRI64_PREFIX "u"
+
+# define SCNuLEAST8	"hhu"
+# define SCNuLEAST16	"hu"
+# define SCNuLEAST32	"u"
+# define SCNuLEAST64	__PRI64_PREFIX "u"
+
+# define SCNuFAST8	"hhu"
+# define SCNuFAST16	__PRIPTR_PREFIX "u"
+# define SCNuFAST32	__PRIPTR_PREFIX "u"
+# define SCNuFAST64	__PRI64_PREFIX "u"
+
+/* Octal notation.  */
+# define SCNo8		"hho"
+# define SCNo16		"ho"
+# define SCNo32		"o"
+# define SCNo64		__PRI64_PREFIX "o"
+
+# define SCNoLEAST8	"hho"
+# define SCNoLEAST16	"ho"
+# define SCNoLEAST32	"o"
+# define SCNoLEAST64	__PRI64_PREFIX "o"
+
+# define SCNoFAST8	"hho"
+# define SCNoFAST16	__PRIPTR_PREFIX "o"
+# define SCNoFAST32	__PRIPTR_PREFIX "o"
+# define SCNoFAST64	__PRI64_PREFIX "o"
+
+/* Hexadecimal notation.  */
+# define SCNx8		"hhx"
+# define SCNx16		"hx"
+# define SCNx32		"x"
+# define SCNx64		__PRI64_PREFIX "x"
+
+# define SCNxLEAST8	"hhx"
+# define SCNxLEAST16	"hx"
+# define SCNxLEAST32	"x"
+# define SCNxLEAST64	__PRI64_PREFIX "x"
+
+# define SCNxFAST8	"hhx"
+# define SCNxFAST16	__PRIPTR_PREFIX "x"
+# define SCNxFAST32	__PRIPTR_PREFIX "x"
+# define SCNxFAST64	__PRI64_PREFIX "x"
+
+/* Macros for scanning `intmax_t' and `uintmax_t'.  */
+# define SCNdMAX	__PRI64_PREFIX "d"
+# define SCNiMAX	__PRI64_PREFIX "i"
+# define SCNoMAX	__PRI64_PREFIX "o"
+# define SCNuMAX	__PRI64_PREFIX "u"
+# define SCNxMAX	__PRI64_PREFIX "x"
+
+/* Macros for scanning `intptr_t' and `uintptr_t'.  */
+# define SCNdPTR	__PRIPTR_PREFIX "d"
+# define SCNiPTR	__PRIPTR_PREFIX "i"
+# define SCNoPTR	__PRIPTR_PREFIX "o"
+# define SCNuPTR	__PRIPTR_PREFIX "u"
+# define SCNxPTR	__PRIPTR_PREFIX "x"
+
+#endif	/* C++ && format macros */
+
+#if __WORDSIZE == 64
+
+/* We have to define the `uintmax_t' type using `ldiv_t'.  */
+typedef struct {
+	long int quot;		/* Quotient.  */
+	long int rem;		/* Remainder.  */
+} imaxdiv_t;
+
+#else
+
+/* We have to define the `uintmax_t' type using `lldiv_t'.  */
+typedef struct {
+	long long int quot;		/* Quotient.  */
+	long long int rem;		/* Remainder.  */
+} imaxdiv_t;
+
+#endif
+
+#endif /* inttypes.h */