ARM: imx_v4_v5_defconfig: Add VFAT support

Select CONFIG_VFAT_FS by default.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

arch/arm/configs/imx_v4_v5_defconfig

@@ -177,6 +177,7 @@ CONFIG_EXT2_FS=y
 CONFIG_EXT3_FS=y
 CONFIG_EXT4_FS=y
 # CONFIG_DNOTIFY is not set
+CONFIG_VFAT_FS=y
 # CONFIG_PROC_PAGE_MONITOR is not set
 CONFIG_TMPFS=y
 CONFIG_JFFS2_FS=y