Fix a typo: gpio 21 is already used for the WPS led. Gpio 20 is the
right one (tested) for the mode switch. Confirmed that
/sys/kernel/debug/gpio state followed the position of the switch.
Signed-off-by: Russell Senior <russell@personaltelco.net>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@41858 3c298f89-4303-0410-b956-a3cf2f4a3e73