kernel: backport a fix for multiqueue selection to prevent tcp reordering with fair queueing

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

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@38016 3c298f89-4303-0410-b956-a3cf2f4a3e73
ath9k: merge a fix for PS-Poll responses + aggregation

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

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@38017 3c298f89-4303-0410-b956-a3cf2f4a3e73