The GPIO buttons of ARV752DPW are active low.
Treating them as active high caused a reboot loop as a reset-button
press is detected by gpio-button-hotplug/gpio-keys-polled on startup.
This fixes: https://dev.openwrt.org/ticket/12642
Signed-off-by: Rafael Gieschke <rafael@gieschke.de>
SVN-Revision: 36783
John Crispin