ARM: dts: imx6ull-colibri: Remove unnecessary #address-cells/#size-cells

Building with W=1 leads to the following dtc warning:

arch/arm/boot/dts/imx6ull-colibri.dtsi:36.9-46.5: Warning (graph_child_address): /connector/ports: graph node has single child node 'port@0', #address-cells/#size-cells are not necessary

Since a single port is used, 'ports' can be removed, as well as the
unnecessary #address-cells/#size-cells.

Fixes: bd5880e1 ("ARM: dts: colibri-imx6ull: Enable dual-role switching")
Signed-off-by: Fabio Estevam <festevam@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx6ull-colibri.dtsi

@@ -33,15 +33,9 @@ connector {
 		self-powered;
 		type = "micro";
 
-		ports {
-			#address-cells = <1>;
-			#size-cells = <0>;
-
-			port@0 {
-				reg = <0>;
-				usb_dr_connector: endpoint {
-					remote-endpoint = <&usb1_drd_sw>;
-				};
+		port {
+			usb_dr_connector: endpoint {
+				remote-endpoint = <&usb1_drd_sw>;
 			};
 		};
 	};