atheros trunk moved to full sysfs gpiolib, but the leds were forgotten.
This restores the wlan led that was missing after switching from backfire
to trunk.
Signed-off-by: Karl Palsson <karlp@remake.is>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@32885 3c298f89-4303-0410-b956-a3cf2f4a3e73
