oneshot: Prepare stuff for WAN LED autodetection

oneshot/scripts/012-omnia-wan-led

+#!/bin/sh
+if [ "$(uname -m)" = "armv7l" ] && \
+   [ -z "$(uci show system | grep '@led.*.sysfs=.omnia-led:wan.')" ] && \
+   [ -d "/sys/class/leds/omnia-led:wan" ] && \
+   [ -n "$(uci get network.wan.ifname)" ]; then
+	uci set system.led_wan="led"
+	uci set system.led_wan.name="Auto-configuration for WAN"
+	uci set system.led_wan.sysfs="omnia-led:wan"
+	uci commit
+	/etc/init.d/led_autoconfig restart
+fi