[PATCH v2] dt-bindings: i2c: convert i2c-mt65xx to json-schema

[Miles Chen]

> Convert I2C binding for MediaTek SoCs to Devicetree schema.
> 
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno at collabora.com>

Reviewed-by: Miles Chen <miles.chen at mediatek.com>