ARM: dts: BCM5301X: Specify USB ports for USB LED of Luxul XWR-1200

This info can be used by operating system to setup LED behavior.
Reported-by: Dan Haab <dhaab@luxul.com>
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

arch/arm/boot/dts/bcm47081-luxul-xwr-1200.dts

@@ -57,7 +57,8 @@ lan2 {
 		usb {
 			label = "bcm53xx:green:usb";
 			gpios = <&chipcommon 8 GPIO_ACTIVE_LOW>;
-			linux,default-trigger = "none";
+			trigger-sources = <&ohci_port2>, <&ehci_port2>;
+			linux,default-trigger = "usbport";
 		};
 
 		status {