mac80211: merge upstream patch to suppress unnecessary ad-hoc mode scan with fixed-freq, fixed-bssid

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

git-svn-id: svn://svn.openwrt.org/openwrt@37764 3c298f89-4303-0410-b956-a3cf2f4a3e73
ar71xx: ethernet: reduce tx dma ring size further to improve cache footprint

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

git-svn-id: svn://svn.openwrt.org/openwrt@37765 3c298f89-4303-0410-b956-a3cf2f4a3e73
ath9k: reorganize patches

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

git-svn-id: svn://svn.openwrt.org/openwrt@37766 3c298f89-4303-0410-b956-a3cf2f4a3e73
ath9k: merge a few more cleanups/fixes

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

git-svn-id: svn://svn.openwrt.org/openwrt@37767 3c298f89-4303-0410-b956-a3cf2f4a3e73