ASoC: dt-bindings: ak5558: Convert to dtschema

Convert the AK5558 ADC audio codec bindings to DT schema.

Signed-off-by: Saalim Quadri <danascape@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230322200949.8986-1-danascape@gmail.com


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