ARM: dts: define USB aliases for all omap5 platforms

This allows us to properly map the USB controller indexes

Tested on dra76 evm, am572 evm

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
diff --git a/arch/arm/dts/omap5-u-boot.dtsi b/arch/arm/dts/omap5-u-boot.dtsi
index 1eb50cd..54a7285 100644
--- a/arch/arm/dts/omap5-u-boot.dtsi
+++ b/arch/arm/dts/omap5-u-boot.dtsi
@@ -12,6 +12,11 @@
 		tick-timer = &timer2;
 	};
 
+	aliases {
+		usb0 = &usb1;
+		usb1 = &usb2;
+	};
+
 	ocp {
 		u-boot,dm-spl;