sunxi: OLIMEX A20-SOM board support
sunxi: fix failure of mmc init
sunxi: mmc_trans_data_by_cpu: use setbits_le32

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
sunxi: Add qt840a board

This board is indentical to the i12-tvbox board, but it has only 1 dram
ic soldered on, so it uses a 16 bit rather then a 32 bit bus for the dram.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>