ASoC: dt-bindings: Add WSA883x bindings

This patch adds bindings for WSA883x Smart Speaker Amplifier.
This Amplifier also has a simple thermal sensor for temperature
measurments with speaker protection.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20220629090644.67982-2-srinivas.kandagatla@linaro.org


Signed-off-by: Mark Brown <broonie@kernel.org>