ASoC: dt-bindings: fsl,mqs: Convert format to json-schema

Convert NXP medium quality sound (MQS) device tree binding
documentation to json-schema.

Signed-off-by: Chancel Liu <chancel.liu@nxp.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20231122101959.30264-4-chancel.liu@nxp.com


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