Allwinner DT changes for 4.8
The usual amount of DT patches, among which:
- I2S support
- Support for the AXP809 in the relevant boards (A80 based)
- New boards: Banapi M1+, Banapi M2+, Allwinner Parrot (R16 EVB),
- The other patches to enable various controllers on our boards, most
notably USB OTG