ASoC: dt-bindings: qcom,wcd9335: Convert to dtschema

Convert the Qualcomm WCD9335 audio codec binding to DT schema.

Changes against original binding:
1. Drop "mclk2" from clocks as neither Linux driver nor DTS uses it.
2. Do not require vdd-micbias-supply as several DTS do not provide it.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20230220095643.64898-2-krzysztof.kozlowski@linaro.org


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