ARM: dts: imx6q(dl): Move 'port' nodes under 'ports' for HDMI encoder

In preparation for the conversion of the DWC HDMI TX device tree
bindings to YAML, move the HDMI encoder's 'port' nodes under a 'ports'
node. The 'ports' node is optional in the OF graph implementation, but
YAML bindings require it.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx6q.dtsi

@@ -406,19 +406,21 @@ ipu2_csi1_mux_to_ipu2_csi1: endpoint {
 &hdmi {
 	compatible = "fsl,imx6q-hdmi";
 
-	port@2 {
-		reg = <2>;
+	ports {
+		port@2 {
+			reg = <2>;
 
-		hdmi_mux_2: endpoint {
-			remote-endpoint = <&ipu2_di0_hdmi>;
+			hdmi_mux_2: endpoint {
+				remote-endpoint = <&ipu2_di0_hdmi>;
+			};
 		};
-	};
 
-	port@3 {
-		reg = <3>;
+		port@3 {
+			reg = <3>;
 
-		hdmi_mux_3: endpoint {
-			remote-endpoint = <&ipu2_di1_hdmi>;
+			hdmi_mux_3: endpoint {
+				remote-endpoint = <&ipu2_di1_hdmi>;
+			};
 		};
 	};
 };

arch/arm/boot/dts/imx6qdl.dtsi

@@ -182,8 +182,6 @@ gpmi: nand-controller@112000 {
 		};
 
 		hdmi: hdmi@120000 {
-			#address-cells = <1>;
-			#size-cells = <0>;
 			reg = <0x00120000 0x9000>;
 			interrupts = <0 115 0x04>;
 			gpr = <&gpr>;
@@ -192,19 +190,24 @@ hdmi: hdmi@120000 {
 			clock-names = "iahb", "isfr";
 			status = "disabled";
 
-			port@0 {
-				reg = <0>;
+			ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				port@0 {
+					reg = <0>;
 
-				hdmi_mux_0: endpoint {
-					remote-endpoint = <&ipu1_di0_hdmi>;
+					hdmi_mux_0: endpoint {
+						remote-endpoint = <&ipu1_di0_hdmi>;
+					};
 				};
-			};
 
-			port@1 {
-				reg = <1>;
+				port@1 {
+					reg = <1>;
 
-				hdmi_mux_1: endpoint {
-					remote-endpoint = <&ipu1_di1_hdmi>;
+					hdmi_mux_1: endpoint {
+						remote-endpoint = <&ipu1_di1_hdmi>;
+					};
 				};
 			};
 		};