wifi: mt76: mt7921: make mt7921_mac_sta_poll static

Make mt7921_mac_sta_poll static since it is run just in mac.c
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt7921/mac.c

@@ -52,7 +52,7 @@ bool mt7921_mac_wtbl_update(struct mt7921_dev *dev, int idx, u32 mask)
 			 0, 5000);
 }
 
-void mt7921_mac_sta_poll(struct mt7921_dev *dev)
+static void mt7921_mac_sta_poll(struct mt7921_dev *dev)
 {
 	static const u8 ac_to_tid[] = {
 		[IEEE80211_AC_BE] = 0,
@@ -183,7 +183,6 @@ void mt7921_mac_sta_poll(struct mt7921_dev *dev)
 		ewma_avg_signal_add(&msta->avg_ack_signal, -msta->ack_signal);
 	}
 }
-EXPORT_SYMBOL_GPL(mt7921_mac_sta_poll);
 
 static void
 mt7921_get_status_freq_info(struct mt7921_dev *dev, struct mt76_phy *mphy,

drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h

@@ -484,7 +484,6 @@ int mt7921_testmode_dump(struct ieee80211_hw *hw, struct sk_buff *msg,
 void mt7921_txwi_free(struct mt7921_dev *dev, struct mt76_txwi_cache *t,
 		      struct ieee80211_sta *sta, bool clear_status,
 		      struct list_head *free_list);
-void mt7921_mac_sta_poll(struct mt7921_dev *dev);
 int mt7921_mcu_parse_response(struct mt76_dev *mdev, int cmd,
 			      struct sk_buff *skb, int seq);