ARM: dts: BCM5301X: Specify USB ports for USB LEDs of few devices

This uses trigger-sources documented in commit 80dc6e1cd85fc ("dt-bindings:
leds: document new trigger-sources property") to specify USB ports. Such an
information can be used by operating system to setup LEDs behavior.

I updated dts files for 7 devices I own and I was able to test.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
diff --git a/arch/arm/boot/dts/bcm4708-buffalo-wzr-1750dhp.dts b/arch/arm/boot/dts/bcm4708-buffalo-wzr-1750dhp.dts
index 62e1427..8b64caa 100644
--- a/arch/arm/boot/dts/bcm4708-buffalo-wzr-1750dhp.dts
+++ b/arch/arm/boot/dts/bcm4708-buffalo-wzr-1750dhp.dts
@@ -52,6 +52,10 @@
 		usb {
 			label = "bcm53xx:blue:usb";
 			gpios = <&hc595 0 GPIO_ACTIVE_HIGH>;
+			trigger-sources = <&ohci_port1>, <&ehci_port1>,
+					  <&xhci_port1>, <&ohci_port2>,
+					  <&ehci_port2>;
+			linux,default-trigger = "usbport";
 		};
 
 		power0 {