bcm53xx: add USB LED for Buffalo WZR-1750DHP

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@45465 3c298f89-4303-0410-b956-a3cf2f4a3e73

target/linux/generic/patches-3.18/331-ARM-BCM5301X-Add-USB-LED-for-Buffalo-WZR-1750DHP.patch

+From: Felix Fietkau <nbd@openwrt.org>
+Subject: [PATCH] ARM: BCM5301X: Add USB LED for Buffalo WZR-1750DHP
+
+Signed-off-by: Felix Fietkau <nbd@openwrt.org>
+---
+--- a/arch/arm/boot/dts/bcm4708-buffalo-wzr-1750dhp.dts
++++ b/arch/arm/boot/dts/bcm4708-buffalo-wzr-1750dhp.dts
+@@ -48,6 +48,12 @@
+ 	leds {
+ 		compatible = "gpio-leds";
+ 
++		usb {
++			label = "bcm53xx:blue:usb";
++			gpios = <&hc595 0 GPIO_ACTIVE_HIGH>;
++			linux,default-trigger = "default-off";
++		};
++
+ 		power0 {
+ 			label = "bcm53xx:red:power";
+ 			gpios = <&hc595 1 GPIO_ACTIVE_HIGH>;