mt76: fix a compile error on 3.18

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

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@43407 3c298f89-4303-0410-b956-a3cf2f4a3e73
mac80211: update regdb to master-2014-11-18

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

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@43408 3c298f89-4303-0410-b956-a3cf2f4a3e73