sun6i: Add support for the Mixtile LOFT-Q board

sun6i: Add support for the Mixtile LOFT-Q board

The Mixtile LOFT-Q is an A31 based board with 2G RAM, 8G EMMC, sdio wifi,
1Gbit ethernet, HDMI display, toslink audio plug, 4 USB2.0 port, external
USB2SATA connector, sd card plug, 3x60 external fpic expansion connector,
NXP JN5168 zigbee gw, remote support.

Also see http://focalcrest.com/en/pc.html#pro02

Signed-off-by: Han Pengfei <pengphei@sina.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>