ASoC: dt-bindings: wlf,wm8524: Convert to json-schema

Convert the Wolfson WM8524 24-bit 192KHz Stereo DAC device tree
binding documentation to json-schema.

Signed-off-by: Chancel Liu <chancel.liu@nxp.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230227091938.1671416-1-chancel.liu@nxp.com


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