ath9k: prepare queueing code for handling unaggregated traffic

- Allow ath_tx_get_tid_subframe to return non-AMPDU subframes.
- Reset the tid paused state on aggregation stop
- Initialize software queues even when HT is not supported

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath/ath9k/main.c

@@ -1371,9 +1371,6 @@ static void ath9k_sta_notify(struct ieee80211_hw *hw,
 	struct ath_softc *sc = hw->priv;
 	struct ath_node *an = (struct ath_node *) sta->drv_priv;
 
-	if (!sta->ht_cap.ht_supported)
-		return;
-
 	switch (cmd) {
 	case STA_NOTIFY_SLEEP:
 		an->sleeping = true;