NAND boot: change NAND loader's relocate SP to CONFIG param

So that we can set the NAND loader's relocate stack pointer
to the value other than the relocate address + 0x10000.

Signed-off-by: Mingkai Hu <Mingkai.hu@freescale.com>
Acked-by: Kim Phillips <kim.phillips@freescale.com>
Acked-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/include/configs/MPC8313ERDB.h b/include/configs/MPC8313ERDB.h
index 4bf05d2..76b7894 100644
--- a/include/configs/MPC8313ERDB.h
+++ b/include/configs/MPC8313ERDB.h
@@ -242,6 +242,7 @@
 #define CONFIG_SYS_NAND_U_BOOT_START 0x00100100
 #define CONFIG_SYS_NAND_U_BOOT_OFFS  16384
 #define CONFIG_SYS_NAND_U_BOOT_RELOC 0x00010000
+#define CONFIG_SYS_NAND_U_BOOT_RELOC_SP (CONFIG_SYS_NAND_U_BOOT_RELOC + 0x10000)
 
 #define CONFIG_SYS_NAND_BR_PRELIM	( CONFIG_SYS_NAND_BASE \
 				| (2<<BR_DECC_SHIFT)	/* Use HW ECC */ \