mac80211: add missing queue/hash initialization to 802.3 xmit

Fixes AQL for encap-offloaded tx

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20200908123702.88454-2-nbd@nbd.name


Signed-off-by: Johannes Berg <johannes.berg@intel.com>