ASoC: dt-bindings: maxim,max98090: Convert to dtschema

Convert the Maxim Integrated MAX98090/MAX98091 audio codecs bindings to
DT schema.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230208160410.371609-1-krzysztof.kozlowski@linaro.org


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