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: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Liu Ying <Ying.Liu@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

arch/arm/boot/dts/imx6q.dtsi

@@ -294,19 +294,21 @@
 };
 
 &mipi_dsi {
-	port@2 {
-		reg = <2>;
+	ports {
+		port@2 {
+			reg = <2>;
 
-		mipi_mux_2: endpoint {
-			remote-endpoint = <&ipu2_di0_mipi>;
+			mipi_mux_2: endpoint {
+				remote-endpoint = <&ipu2_di0_mipi>;
+			};
 		};
-	};
 
-	port@3 {
-		reg = <3>;
+		port@3 {
+			reg = <3>;
 
-		mipi_mux_3: endpoint {
-			remote-endpoint = <&ipu2_di1_mipi>;
+			mipi_mux_3: endpoint {
+				remote-endpoint = <&ipu2_di1_mipi>;
+			};
 		};
 	};
 };