mac80211: revert a faulty upstream change which is causing channel 12 to be enabled for US regdomain

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

Backport of r41298

git-svn-id: svn://svn.openwrt.org/openwrt/branches/attitude_adjustment@41301 3c298f89-4303-0410-b956-a3cf2f4a3e73
AA: tools: fix b43-tools build dependencies

Signed-off-by: Tim Niemeyer <tim.niemeyer@mastersword.de>

git-svn-id: svn://svn.openwrt.org/openwrt/branches/attitude_adjustment@41303 3c298f89-4303-0410-b956-a3cf2f4a3e73