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 <allen-kh.cheng@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Link: https://lore.kernel.org/r/20220224130822.11292-2-allen-kh.cheng@mediatek.comSigned-off-by: Vinod Koul <vkoul@kernel.org>

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

@@ -81,6 +81,7 @@ properties:
               - mediatek,mt7629-tphy
               - mediatek,mt8183-tphy
               - mediatek,mt8186-tphy
+              - mediatek,mt8192-tphy
           - const: mediatek,generic-tphy-v2
       - items:
           - enum: