configs: mx53loco: Extend to ext4 type

Add support for EXT4 filesystem.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

configs/mx53loco_defconfig

@@ -13,6 +13,7 @@ BR2_GLOBAL_PATCH_DIR="board/freescale/imx53loco/patches/"
 
 # Filesystem
 BR2_TARGET_ROOTFS_EXT2=y
+BR2_TARGET_ROOTFS_EXT2_4=y
 
 # Bootloader
 BR2_TARGET_UBOOT=y