mt76: remove mt76_queue dependency from tx_complete_skb function pointer

Remove mt76_queue dependency from tx_complete_skb function pointer and
rely on mt76_tx_qid instead. Remove flush from tx_complete_skb
signature. This is a preliminary patch to introduce mt76_sw_queue
support

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/usb.c

@@ -651,7 +651,7 @@ static void mt76u_tx_tasklet(unsigned long data)
 			q->queued--;
 
 			spin_unlock_bh(&q->lock);
-			dev->drv->tx_complete_skb(dev, q, &entry, false);
+			dev->drv->tx_complete_skb(dev, i, &entry);
 			spin_lock_bh(&q->lock);
 		}
 		mt76_txq_schedule(dev, q);