Move console definitions into a new console.h file

The console includes a global variable and several functions that are only
used by a small subset of U-Boot files. Before adding more functions, move
the definitions into their own header file.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/blackfin/lib/cmd_cache_dump.c b/arch/blackfin/lib/cmd_cache_dump.c
index 412e019..f9f9097 100644
--- a/arch/blackfin/lib/cmd_cache_dump.c
+++ b/arch/blackfin/lib/cmd_cache_dump.c
@@ -9,6 +9,7 @@
 #include <config.h>
 #include <common.h>
 #include <command.h>
+#include <console.h>
 
 #include <asm/blackfin.h>
 #include <asm/mach-common/bits/mpu.h>
diff --git a/arch/powerpc/cpu/mpc8260/ether_fcc.c b/arch/powerpc/cpu/mpc8260/ether_fcc.c
index 30ea3de..9bb395e 100644
--- a/arch/powerpc/cpu/mpc8260/ether_fcc.c
+++ b/arch/powerpc/cpu/mpc8260/ether_fcc.c
@@ -24,6 +24,7 @@
  */
 
 #include <common.h>
+#include <console.h>
 #include <malloc.h>
 #include <asm/cpm_8260.h>
 #include <mpc8260.h>
diff --git a/arch/powerpc/cpu/mpc8260/i2c.c b/arch/powerpc/cpu/mpc8260/i2c.c
index 8658ebd..a0de101 100644
--- a/arch/powerpc/cpu/mpc8260/i2c.c
+++ b/arch/powerpc/cpu/mpc8260/i2c.c
@@ -9,6 +9,7 @@
  */
 
 #include <common.h>
+#include <console.h>
 
 #if defined(CONFIG_HARD_I2C)
 
diff --git a/arch/powerpc/cpu/mpc8xx/i2c.c b/arch/powerpc/cpu/mpc8xx/i2c.c
index 6146de3..3dff4ab 100644
--- a/arch/powerpc/cpu/mpc8xx/i2c.c
+++ b/arch/powerpc/cpu/mpc8xx/i2c.c
@@ -12,6 +12,7 @@
  */
 
 #include <common.h>
+#include <console.h>
 
 #ifdef CONFIG_HARD_I2C
 
diff --git a/arch/sh/lib/board.c b/arch/sh/lib/board.c
index 6dad3c7..69cdca3 100644
--- a/arch/sh/lib/board.c
+++ b/arch/sh/lib/board.c
@@ -7,6 +7,7 @@
 
 #include <common.h>
 #include <command.h>
+#include <console.h>
 #include <malloc.h>
 #include <stdio_dev.h>
 #include <version.h>
diff --git a/arch/sparc/lib/board.c b/arch/sparc/lib/board.c
index d2ac6bc..10475d1 100644
--- a/arch/sparc/lib/board.c
+++ b/arch/sparc/lib/board.c
@@ -11,6 +11,7 @@
 
 #include <common.h>
 #include <command.h>
+#include <console.h>
 #include <malloc.h>
 #include <stdio_dev.h>
 #include <config.h>