ARM: dts: sun7i: lamobo-r1: Enable audio codec

Lamobo R1 has a headphone jack for audio output, and an onboard
microphone. These are tied to the SoC's internal audio codec.

Enable the audio codec.

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