ar71xx: wp543: set active_low flag for the buttons

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

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@39400 3c298f89-4303-0410-b956-a3cf2f4a3e73
ar71xx: wpe72: set active_low flag for the reset button

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

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@39401 3c298f89-4303-0410-b956-a3cf2f4a3e73