ARM: dts: imx6qdl: Move existing MIPI DSI ports into a new 'ports' node

The MIPI DSI node contains some ports which represent possible DRM CRTCs
it can connect with.  Each port has a 'reg' property embedded.  This
property will be wrongly interpretted by the MIPI DSI bus driver, because
the driver will take each subnode which contains a 'reg' property as a
DSI peripheral device.  This patch moves the existing MIPI DSI ports into
a new 'ports' node so that the MIPI DSI bus driver may distinguish its
DSI peripheral device(s) from the existing ports.
Acked-by: NPhilipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: NLiu Ying <Ying.Liu@freescale.com>
Signed-off-by: NShawn Guo <shawn.guo@linaro.org>

arch/arm/boot/dts/imx6q.dtsi

@@ -294,6 +294,7 @@
 };
 
 &mipi_dsi {
+	ports {
 		port@2 {
 			reg = <2>;
 
@@ -309,6 +310,7 @@
 				remote-endpoint = <&ipu2_di1_mipi>;
 			};
 		};
+	};
 };
 
 &vpu {

arch/arm/boot/dts/imx6qdl.dtsi

@@ -1022,6 +1022,10 @@
 				reg = <0x021e0000 0x4000>;
 				status = "disabled";
 
+				ports {
+					#address-cells = <1>;
+					#size-cells = <0>;
+
 					port@0 {
 						reg = <0>;
 
@@ -1038,6 +1042,7 @@
 						};
 					};
 				};
+			};
 
 			vdoa@021e4000 {
 				reg = <0x021e4000 0x4000>;