ar71xx: WNDAP360 adding wifi LED support

I added WIFI LED support (so now AP blinks nicely), I removed WPS
button GPIO (as it doesn't exist) and changed GPIO for reset button.

Signed-off-by: Jacek Kikiewicz <jaceq@aol.pl>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@40976 3c298f89-4303-0410-b956-a3cf2f4a3e73