configs: socfpga: Change to use SOCFPGA_PHYS_OCRAM_SIZE macro

Change to use SOCFPGA_PHYS_OCRAM_SIZE macro for onchip RAM size.

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
diff --git a/include/configs/socfpga_common.h b/include/configs/socfpga_common.h
index ec41843..410ec80 100644
--- a/include/configs/socfpga_common.h
+++ b/include/configs/socfpga_common.h
@@ -21,14 +21,15 @@
 #define CONFIG_SYS_MEMTEST_END		PHYS_SDRAM_1_SIZE
 #if defined(CONFIG_TARGET_SOCFPGA_GEN5)
 #define CONFIG_SYS_INIT_RAM_ADDR	0xFFFF0000
-#define CONFIG_SYS_INIT_RAM_SIZE	0x10000
+#define CONFIG_SYS_INIT_RAM_SIZE	SOCFPGA_PHYS_OCRAM_SIZE
 #elif defined(CONFIG_TARGET_SOCFPGA_ARRIA10)
 #define CONFIG_SYS_INIT_RAM_ADDR	0xFFE00000
 /* SPL memory allocation configuration, this is for FAT implementation */
 #ifndef CONFIG_SYS_SPL_MALLOC_SIZE
 #define CONFIG_SYS_SPL_MALLOC_SIZE	0x10000
 #endif
-#define CONFIG_SYS_INIT_RAM_SIZE	(0x40000 - CONFIG_SYS_SPL_MALLOC_SIZE)
+#define CONFIG_SYS_INIT_RAM_SIZE	(SOCFPGA_PHYS_OCRAM_SIZE - \
+					 CONFIG_SYS_SPL_MALLOC_SIZE)
 #define CONFIG_SYS_SPL_MALLOC_START	(CONFIG_SYS_INIT_RAM_ADDR + \
 					 CONFIG_SYS_INIT_RAM_SIZE)
 #endif