ASoC: dt-bindings: mt2701-wm8960: Convert to dtschema

Convert mt2701-wm890 bindings from text to dtschema. This is used by
MediaTek mt7623a/n SoC.

Signed-off-by: Kartik Agarwala <agarwala.kartik@gmail.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20240421033129.13076-1-agarwala.kartik@gmail.com


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