arm64: dts: mt8183: Add port node to mt8183.dtsi

[ Upstream commit d15059f7be59f887c1a370037cc2337c2ff2ad56 ]

Add the port node to fix the binding schema check. Also update
mt8183-kukui to reference the new port node.

Fixes: 88ec840270 ("arm64: dts: mt8183: Add dsi node")
Fixes: 27eaf34df3 ("arm64: dts: mt8183: config dsi node")
Signed-off-by: Pin-yen Lin <treapking@chromium.org>
Link: https://lore.kernel.org/r/20250423040354.2847447-1-treapking@chromium.org
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi

@@ -280,14 +280,10 @@
 			};
 		};
 	};
+};
 
-	ports {
-		port {
-			dsi_out: endpoint {
-				remote-endpoint = <&panel_in>;
-			};
-		};
-	};
+&dsi_out {
+	remote-endpoint = <&panel_in>;
 };
 
 &gic {

arch/arm64/boot/dts/mediatek/mt8183.dtsi

@@ -1836,6 +1836,10 @@
 			phys = <&mipi_tx0>;
 			phy-names = "dphy";
 			status = "disabled";
+
+			port {
+				dsi_out: endpoint { };
+			};
 		};
 
 		dpi0: dpi@14015000 {