ARM: zynq: Enable EXT4 configs

Enabled the EXT4 configs.

Signed-off-by: Siva Durga Prasad Paladugu <sivadur@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 0a7d104..09d6c55 100644
--- a/include/configs/zynq-common.h
+++ b/include/configs/zynq-common.h
@@ -102,6 +102,8 @@
 # define CONFIG_CMD_EXT2
 # define CONFIG_FAT_WRITE
 # define CONFIG_DOS_PARTITION
+# define CONFIG_CMD_EXT4
+# define CONFIG_CMD_EXT4_WRITE
 #endif
 
 #define CONFIG_SYS_I2C_ZYNQ