ASoC: dt-bindings: realtek,rt5682s: Add AVDD and MICVDD supplies

The rt5682s codec has two supplies - AVDD and MICVDD - which are already
used by sc7180-trogdor-kingoftown.dtsi. Document them in the binding.

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Link: https://lore.kernel.org/r/20221102182002.255282-2-nfraprado@collabora.com


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