DIR300: led support

- move wlan led to gpio2 as this is the real wlan led
- set wlan led to none

This fixes #424.

Signed-off-by: Tim Niemeyer <tim.niemeyer@mastersword.de>

bsp/dir300/root_file_system/etc/config/system

@@ -0,0 +1,17 @@
+
+config system
+	option timezone 'CET-1CEST,M3.5.0,M10.5.0/3'
+	option hostname 'OpenWrt'
+
+config led 'led_wlan'
+	option name 'wlan'
+	option sysfs 'gpio2'
+	option trigger 'netdev'
+	option dev 'wlan0'
+	option mode 'link tx rx'
+
+config led 'led_status'
+	option name 'status'
+	option sysfs 'wlan'
+	option trigger 'none'
+