nand: mxc: Switch NAND SPL to generic SPL

This also fixes support for mx31pdk and tx25, which had been broken by commit
e05e5de7fae5bec79617e113916dac6631251156.

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
Acked-by: Scott Wood <scottwood@freescale.com>
Tested-by: Fabio Estevam <fabio.estevam@freescale.com>
diff --git a/board/freescale/mx31pdk/Makefile b/board/freescale/mx31pdk/Makefile
index 5b7cafd..b910722 100644
--- a/board/freescale/mx31pdk/Makefile
+++ b/board/freescale/mx31pdk/Makefile
@@ -27,6 +27,9 @@
 
 LIB	= $(obj)lib$(BOARD).o
 
+ifdef CONFIG_SPL_BUILD
+SOBJS	:= lowlevel_init.o
+endif
 COBJS	:= mx31pdk.o
 
 SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
diff --git a/board/freescale/mx31pdk/config.mk b/board/freescale/mx31pdk/config.mk
deleted file mode 100644
index de2c642..0000000
--- a/board/freescale/mx31pdk/config.mk
+++ /dev/null
@@ -1,5 +0,0 @@
-ifdef CONFIG_NAND_SPL
-CONFIG_SYS_TEXT_BASE = 0x87ec0000
-else
-CONFIG_SYS_TEXT_BASE = 0x87f00000
-endif
diff --git a/board/freescale/mx31pdk/mx31pdk.c b/board/freescale/mx31pdk/mx31pdk.c
index 895396c..3d0d419 100644
--- a/board/freescale/mx31pdk/mx31pdk.c
+++ b/board/freescale/mx31pdk/mx31pdk.c
@@ -36,6 +36,14 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
+#ifdef CONFIG_SPL_BUILD
+void board_init_f(ulong bootflag)
+{
+	relocate_code(0, NULL, CONFIG_SPL_TEXT_BASE);
+	asm volatile("ldr pc, =nand_boot");
+}
+#endif
+
 int dram_init(void)
 {
 	/* dram_init must store complete ramsize in gd->ram_size */