mac80211: update to 2014-10-08

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

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@42952 3c298f89-4303-0410-b956-a3cf2f4a3e73
mac80211: add a maintenance script for upstream backport commits

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

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@42953 3c298f89-4303-0410-b956-a3cf2f4a3e73