mt76: mt7996: rely on mt76_sta_stats in mt76_wcid

mt76 now accounts station stats in mt76_sta_stats available in mt76_wcid
struct. Get rid of mt7996 private copy.
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt7996/mac.c

@@ -1329,9 +1329,10 @@ mt7996_mac_tx_free(struct mt7996_dev *dev, void *data, int len)
 }
 
 static bool
-mt7996_mac_add_txs_skb(struct mt7996_dev *dev, struct mt76_wcid *wcid, int pid,
-		       __le32 *txs_data, struct mt76_sta_stats *stats)
+mt7996_mac_add_txs_skb(struct mt7996_dev *dev, struct mt76_wcid *wcid,
+		       int pid, __le32 *txs_data)
 {
+	struct mt76_sta_stats *stats = &wcid->stats;
 	struct ieee80211_supported_band *sband;
 	struct mt76_dev *mdev = &dev->mt76;
 	struct mt76_phy *mphy;
@@ -1493,7 +1494,7 @@ static void mt7996_mac_add_txs(struct mt7996_dev *dev, void *data)
 
 	msta = container_of(wcid, struct mt7996_sta, wcid);
 
-	mt7996_mac_add_txs_skb(dev, wcid, pid, txs_data, &msta->stats);
+	mt7996_mac_add_txs_skb(dev, wcid, pid, txs_data);
 
 	if (!wcid->sta)
 		goto out;

drivers/net/wireless/mediatek/mt76/mt7996/main.c

@@ -1214,7 +1214,7 @@ static void mt7996_ethtool_worker(void *wi_data, struct ieee80211_sta *sta)
 	if (msta->vif->mt76.idx != wi->idx)
 		return;
 
-	mt76_ethtool_worker(wi, &msta->stats, true);
+	mt76_ethtool_worker(wi, &msta->wcid.stats, true);
 }
 
 static

drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h

@@ -106,8 +106,6 @@ struct mt7996_sta {
 	unsigned long jiffies;
 	unsigned long ampdu_state;
 
-	struct mt76_sta_stats stats;
-
 	struct mt76_connac_sta_key_conf bip;
 
 	struct {