valgrind: enable parallel builds

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

git-svn-id: svn://svn.openwrt.org/openwrt@36647 3c298f89-4303-0410-b956-a3cf2f4a3e73
ath9k: merge some aggregation / rate handling related fixes

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

git-svn-id: svn://svn.openwrt.org/openwrt@36648 3c298f89-4303-0410-b956-a3cf2f4a3e73