ARM: dts: sun9i: Add consumer IR receiver device node and pinmux settings

The Allwinner A80 SoC has a consumer IR receiver, which is the same as
older SoCs.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>