lantiq: improve DGN3500 LED definitions

Add red:internet led on gpio 30 previously claimed as missing.
Wifi led was claimed as blue however there are no blue leds on the
board at all.  Actually there are two wifi leds, green & amber so add
definitions for those.  Make the newly discovered green wifi led gpio
14 the default.

There is no amber power led on this board. The mention of the amber
power led in the manual means power red and power green at the same
time.

Signed-off-by: Kevin Darbyshire-Bryant <kevin@darbyshire-bryant.me.uk>
[removed unnecessary aliases, add migration script]
Signed-off-by: Mathias Kresin <dev@kresin.me>

target/linux/lantiq/base-files/etc/uci-defaults/01_led_migration

@@ -0,0 +1,54 @@
+#!/bin/sh
+#
+# Copyright (C) 2013 OpenWrt.org
+#
+
+LED_OPTIONS_CHANGED=0
+
+. /lib/functions.sh
+
+do_led_update_sysfs()
+{
+	local cfg=$1; shift
+	local tuples="$@"
+	local sysfs
+	local name
+
+	config_get sysfs $cfg sysfs
+	config_get name $cfg name
+
+	[ -z "$sysfs" ] && return
+
+	for tuple in $tuples; do
+		local old=${tuple%=*}
+		local new=${tuple#*=}
+		local new_sysfs
+
+		new_sysfs=$(echo ${sysfs} | sed "s/${old}/${new}/")
+
+		[ "$new_sysfs" = "$sysfs" ] && continue
+
+		uci set system.${cfg}.sysfs="${new_sysfs}"
+		LED_OPTIONS_CHANGED=1
+
+		logger -t led-migration "sysfs option of LED \"${name}\" updated to ${new_sysfs}"
+	done;
+}
+
+migrate_leds()
+{
+	config_load system
+	config_foreach do_led_update_sysfs led "$@"
+}
+
+case "$(board_name)" in
+DGN3500*)
+	migrate_leds "dgn3500:blue:wireless=dgn3500:green:wireless"
+	;;
+*)
+	;;
+esac
+
+[ "$LED_OPTIONS_CHANGED" = "1" ] && uci commit system
+
+exit 0

target/linux/lantiq/dts/DGN3500.dtsi

@@ -15,7 +15,7 @@
 		led-dsl = &dsl;
 		led-internet = &internet;
 		led-usb = &usb;
-		led-wifi = &wifi;
+		led-wifi = &wifi_green;
 	};
 
 	memory@0 {
@@ -106,9 +106,10 @@
 			label = "dgn3500:green:internet";
 			gpios = <&gpio 2 GPIO_ACTIVE_LOW>;
 		};
-		/*
+		internet2 {
-			internet red is missing
+			label = "dgn3500:red:internet";
-		*/
+			gpios = <&gpio 30 GPIO_ACTIVE_LOW>;
+		};
 		dsl: dsl {
 			label = "dgn3500:green:dsl";
 			gpios = <&gpio 4 GPIO_ACTIVE_LOW>;
@@ -126,11 +127,12 @@
 			label = "dgn3500:red:power";
 			gpios = <&gpio 39 GPIO_ACTIVE_LOW>;
 		};
-		/*
+		wifi_green: wifi {
-			power amber is missing
+			label = "dgn3500:green:wireless";
-		*/
+			gpios = <&gpio 14 GPIO_ACTIVE_LOW>;
-		wifi: wifi {
+		};
-			label = "dgn3500:blue:wireless";
+		wifi2 {
+			label = "dgn3500:amber:wireless";
 			gpios = <&gpio 51 GPIO_ACTIVE_LOW>;
 		};
 		wps {