omap5_common.h: Switch to ext4

ext3 should not be used on SD cards, so use ext4 instead.

Cc: Sricharan R <r.sricharan@ti.com>
Signed-off-by: Tom Rini <trini@ti.com>
diff --git a/include/configs/omap5_common.h b/include/configs/omap5_common.h
index 2751627..c21c387 100644
--- a/include/configs/omap5_common.h
+++ b/include/configs/omap5_common.h
@@ -152,7 +152,7 @@
 	"partitions=" PARTS_DEFAULT "\0" \
 	"mmcdev=0\0" \
 	"mmcroot=/dev/mmcblk0p2 rw\0" \
-	"mmcrootfstype=ext3 rootwait\0" \
+	"mmcrootfstype=ext4 rootwait\0" \
 	"mmcargs=setenv bootargs console=${console} " \
 		"vram=${vram} " \
 		"root=${mmcroot} " \