dt-bindings: phy: mediatek,tphy: Add compatible for MT8192

Add MT8192 compatible to the Mediatek T-PHY dt-binding.

Signed-off-by: Allen-KH Cheng <[e-mail]>
Reviewed-by: AngeloGioacchino Del Regno <[e-mail]>
Reviewed-by: Nícolas F. R. A. Prado <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Vinod Koul <[e-mail]>

Documentation/devicetree/bindings/phy/mediatek,tphy.yaml

···
               - mediatek,mt7629-tphy
               - mediatek,mt8183-tphy
               - mediatek,mt8186-tphy
+              - mediatek,mt8192-tphy
           - const: mediatek,generic-tphy-v2
       - items:
           - enum: