wifi: mt76: allow TX aggregation on the VO queue

The TX aggregation check skipped TIDs 6 and 7, so all voice-priority
traffic was sent without a BA session and therefore unaggregated,
limiting throughput for stations that map bulk traffic to VO. The
hardware handles aggregation on the VO queue fine, and a peer that
prefers unaggregated voice frames can still decline the ADDBA request.

Remove the skip from both the connac2 and the mt7996 aggregation setup
paths.

Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>

mt76_connac_mac.c

@@ -1152,8 +1152,6 @@ void mt76_connac2_tx_check_aggr(struct ieee80211_sta *sta, __le32 *txwi)
 		return;
 
 	tid = le32_get_bits(txwi[1], MT_TXD1_TID);
-	if (tid >= 6) /* skip VO queue */
-		return;
 
 	val = le32_to_cpu(txwi[2]);
 	fc = FIELD_GET(MT_TXD2_FRAME_TYPE, val) << 2 |

mt7996/mac.c

@@ -1252,8 +1252,6 @@ mt7996_tx_check_aggr(struct ieee80211_link_sta *link_sta,
 		return;
 
 	tid = skb->priority & IEEE80211_QOS_CTL_TID_MASK;
-	if (tid >= 6) /* skip VO queue */
-		return;
 
 	if (is_8023) {
 		fc = IEEE80211_FTYPE_DATA |