EXYNOS: Move files from board/samsung to arch/arm

This patch performs the following:

1) Convert the assembly code for memory and clock initialization to C code.
2) Move the memory and clock init codes from board/samsung to arch/arm
3) Creat a common lowlevel_init file across Exynos4 and Exynos5. Converted
   the common lowlevel_init from assembly to C-code
4) Made spl_boot.c and tzpc_init.c common for both exynos4 and exynos5.
5) Enable CONFIG_SKIP_LOWLEVEL_INIT as stack pointer initialisation is already
   done in _main.
6) exynos-uboot-spl.lds made common across SMDKV310, Origen and SMDK5250.

TEST: Tested SD-MMC boot on SMDK5250 and Origen.
      Tested USB and SPI boot on SMDK5250
      Compile tested for SMDKV310.

Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
diff --git a/include/configs/origen.h b/include/configs/origen.h
index f71a463..5013aee 100644
--- a/include/configs/origen.h
+++ b/include/configs/origen.h
@@ -68,6 +68,8 @@
 #define CONFIG_BAUDRATE			115200
 #define EXYNOS4_DEFAULT_UART_OFFSET	0x020000
 
+#define CONFIG_SKIP_LOWLEVEL_INIT
+
 /* SD/MMC configuration */
 #define CONFIG_GENERIC_MMC
 #define CONFIG_MMC
@@ -148,7 +150,10 @@
 #define CONFIG_ENV_OFFSET		(RESERVE_BLOCK_SIZE + BL1_SIZE)
 #define CONFIG_DOS_PARTITION		1
 
-#define CONFIG_SYS_INIT_SP_ADDR	(CONFIG_SYS_LOAD_ADDR - GENERATED_GBL_DATA_SIZE)
+#define CONFIG_SPL_LDSCRIPT	"board/samsung/common/exynos-uboot-spl.lds"
+#define CONFIG_SPL_MAX_FOOTPRINT	(14 * 1024)
+
+#define CONFIG_SYS_INIT_SP_ADDR		0x02040000
 
 /* U-boot copy size from boot Media to DRAM.*/
 #define COPY_BL2_SIZE		0x80000
@@ -157,4 +162,5 @@
 
 /* Enable devicetree support */
 #define CONFIG_OF_LIBFDT
+
 #endif	/* __CONFIG_H */