ARM: zynq: Increase init ram size by 4K

Increase init ram size by 4K such that more stack space will be available
during initialization as the present stackspace is not sufficient if DEBUG
option is enabled and causes system hang. Increasing init ram size provides
sufficient stack space during init even if DEBUG enabled and solves the
hang issue.

Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/include/configs/zynq-common.h b/include/configs/zynq-common.h
index b7e6666..785377e 100644
--- a/include/configs/zynq-common.h
+++ b/include/configs/zynq-common.h
@@ -262,7 +262,7 @@
 #define CONFIG_SYS_MEMTEST_END		0x1000
 
 #define CONFIG_SYS_INIT_RAM_ADDR	0xFFFF0000
-#define CONFIG_SYS_INIT_RAM_SIZE	0x1000
+#define CONFIG_SYS_INIT_RAM_SIZE	0x2000
 #define CONFIG_SYS_INIT_SP_ADDR		(CONFIG_SYS_INIT_RAM_ADDR + \
 					CONFIG_SYS_INIT_RAM_SIZE - \
 					GENERATED_GBL_DATA_SIZE)