arm64: dts: mt8173: fix property typo of 'phys' in dsi node

Use 'phys' instead of 'phy'.

Fixes: 81ad4dbaf7af ("arm64: dts: mt8173: Add display subsystem related nodes")
Signed-off-by: Chunfeng Yun <[e-mail]>
Reviewed-by: Chun-Kuang Hu <[e-mail]>
Cc: stable <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Matthias Brugger <[e-mail]>

arch/arm64/boot/dts/mediatek/mt8173.dtsi

···
 				 <&mmsys CLK_MM_DSI1_DIGITAL>,
 				 <&mipi_tx1>;
 			clock-names = "engine", "digital", "hs";
-			phy = <&mipi_tx1>;
+			phys = <&mipi_tx1>;
 			phy-names = "dphy";
 			status = "disabled";
 		};