ar71xx: add GPIO output select values for AR934x

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@36121 3c298f89-4303-0410-b956-a3cf2f4a3e73
ar71xx: fix ethernet LEDs on the TL-WDR3500

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@36122 3c298f89-4303-0410-b956-a3cf2f4a3e73