configs: socfpga: Add CONFIG_SPL_PAD_TO

Add CONFIG_SPL_PAD_TO for Gen5 and Arria 10. CONFIG_SPL_PAD_TO is set to
size of OCRAM.

This is preparation for image padding change in socfpgaimage.
Signed-off-by: NLey Foon Tan <ley.foon.tan@intel.com>

include/configs/socfpga_common.h

@@ -22,8 +22,10 @@
 #if defined(CONFIG_TARGET_SOCFPGA_GEN5)
 #define CONFIG_SYS_INIT_RAM_ADDR	0xFFFF0000
 #define CONFIG_SYS_INIT_RAM_SIZE	SOCFPGA_PHYS_OCRAM_SIZE
+#define CONFIG_SPL_PAD_TO		0x10000
 #elif defined(CONFIG_TARGET_SOCFPGA_ARRIA10)
 #define CONFIG_SYS_INIT_RAM_ADDR	0xFFE00000
+#define CONFIG_SPL_PAD_TO		0x40000
 /* SPL memory allocation configuration, this is for FAT implementation */
 #ifndef CONFIG_SYS_SPL_MALLOC_SIZE
 #define CONFIG_SYS_SPL_MALLOC_SIZE	0x10000