ARM: socfpga: Put stack at the end of SRAM

The global data are in the .data section, so there's no point in
reserving any space for it above stack. Put stack at the end of
SRAM.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>

include/configs/socfpga_common.h

@@ -35,10 +35,8 @@
 #define CONFIG_SYS_INIT_RAM_ADDR	0xFFE00000
 #define CONFIG_SYS_INIT_RAM_SIZE	0x40000 /* 256KB */
 #endif
-#define CONFIG_SYS_INIT_SP_OFFSET		\
-	(CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
 #define CONFIG_SYS_INIT_SP_ADDR			\
-	(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET)
+	(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_SIZE)
 
 #define CONFIG_SYS_SDRAM_BASE		PHYS_SDRAM_1