SMDK6400: Fix CONFIG_SYS_INIT_SP_ADDR undefined

Fix CONFIG_SYS_INIT_SP_ADDR undefined issue.

Signed-off-by: Zhong Hongbo <bocui107@gmail.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>

include/configs/smdk6400.h

@@ -44,6 +44,11 @@
 #define CONFIG_PERIPORT_BASE	0x70000000
 #define CONFIG_PERIPORT_SIZE	0x13
 
+#define CONFIG_SYS_IRAM_BASE    0x0c000000  /* Internal SRAM base address */
+#define CONFIG_SYS_IRAM_SIZE    0x2000      /* 8 KB of internal SRAM memory */
+#define CONFIG_SYS_IRAM_END     (CONFIG_SYS_IRAM_BASE + CONFIG_SYS_IRAM_SIZE)
+#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_IRAM_END - GENERATED_GBL_DATA_SIZE)
+
 #define CONFIG_SYS_SDRAM_BASE	0x50000000
 
 /* input clock of PLL: SMDK6400 has 12MHz input clock */