ARM: dts: imx: add usb alias

Add usb alias for bootloader searching the controller in correct order.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx6qdl.dtsi

@@ -45,6 +45,10 @@
 		spi1 = &ecspi2;
 		spi2 = &ecspi3;
 		spi3 = &ecspi4;
+		usb0 = &usbotg;
+		usb1 = &usbh1;
+		usb2 = &usbh2;
+		usb3 = &usbh3;
 		usbphy0 = &usbphy1;
 		usbphy1 = &usbphy2;
 	};

arch/arm/boot/dts/imx6sl.dtsi

@@ -39,6 +39,9 @@
 		spi1 = &ecspi2;
 		spi2 = &ecspi3;
 		spi3 = &ecspi4;
+		usb0 = &usbotg1;
+		usb1 = &usbotg2;
+		usb2 = &usbh;
 		usbphy0 = &usbphy1;
 		usbphy1 = &usbphy2;
 	};

arch/arm/boot/dts/imx6sll.dtsi

@@ -36,6 +36,8 @@
 		spi1 = &ecspi2;
 		spi3 = &ecspi3;
 		spi4 = &ecspi4;
+		usb0 = &usbotg1;
+		usb1 = &usbotg2;
 		usbphy0 = &usbphy1;
 		usbphy1 = &usbphy2;
 	};

arch/arm/boot/dts/imx6sx.dtsi

@@ -49,6 +49,9 @@
 		spi2 = &ecspi3;
 		spi3 = &ecspi4;
 		spi4 = &ecspi5;
+		usb0 = &usbotg1;
+		usb1 = &usbotg2;
+		usb2 = &usbh;
 		usbphy0 = &usbphy1;
 		usbphy1 = &usbphy2;
 	};

arch/arm/boot/dts/imx6ul.dtsi

@@ -47,6 +47,8 @@
 		spi1 = &ecspi2;
 		spi2 = &ecspi3;
 		spi3 = &ecspi4;
+		usb0 = &usbotg1;
+		usb1 = &usbotg2;
 		usbphy0 = &usbphy1;
 		usbphy1 = &usbphy2;
 	};

arch/arm/boot/dts/imx7d.dtsi

@@ -7,6 +7,12 @@
 #include <dt-bindings/reset/imx7-reset.h>
 
 / {
+	aliases {
+		usb0 = &usbotg1;
+		usb1 = &usbotg2;
+		usb2 = &usbh;
+	};
+
 	cpus {
 		cpu0: cpu@0 {
 			clock-frequency = <996000000>;

arch/arm/boot/dts/imx7s.dtsi

@@ -47,6 +47,8 @@
 		spi1 = &ecspi2;
 		spi2 = &ecspi3;
 		spi3 = &ecspi4;
+		usb0 = &usbotg1;
+		usb1 = &usbh;
 	};
 
 	cpus {