Use the ext4 driver for ext2 and ext3 too. This feature is activated in
the OpenWrt generic configuration.
Tested-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>