[PATCH] ARM: sunxi: doc: Add sun7i (A20) interrupt table

This patch adds some documentation about the Allwinner sun7i (A20) using
the GIC.

Signed-off-by: Oliver Schinagl <oliver@schinagl.nl>
IRC ahci commit v1,2,3

Signed-off-by: Oliver Schinagl <oliver@schinagl.nl>

Conflicts:
	arch/arm/boot/dts/sun4i-a10-cubieboard.dts
	arch/arm/boot/dts/sun7i-a20-cubieboard2.dts
	arch/arm/boot/dts/sun7i-a20-olinuxino-micro.dts
sunxi: unify cubieboard led assignment.

Signed-off-by: Michal Suchanek <hramrach@gmail.com>
ARM: sunxi: dts: Add ahci node to allwinner A10 and A20 socs
ARM: sunxi: dts: Add ahci support for the cubieboard3, the CubieTruck

Signed-off-by: Oliver Schinagl <oliver@schinagl.nl>

Conflicts:
	arch/arm/boot/dts/sun7i-a20-cubietruck.dts