iwlwifi: fix warning from ieee80211_stop_tx_ba_cb_irqsafe argument change

CC [M]  drivers/net/wireless/iwlwifi/iwl-tx.o
drivers/net/wireless/iwlwifi/iwl-tx.c: In function ‘iwl_tx_agg_stop’:
drivers/net/wireless/iwlwifi/iwl-tx.c:1356: warning: passing argument 1 of ‘ieee80211_stop_tx_ba_cb_irqsafe’ from incompatible pointer type
include/net/mac80211.h:2128: note: expected ‘struct ieee80211_vif *’ but argument is of type ‘struct ieee80211_hw *’
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/wireless/iwlwifi/iwl-tx.c

@@ -1353,7 +1353,7 @@ int iwl_tx_agg_stop(struct iwl_priv *priv , const u8 *ra, u16 tid)
 	if (priv->stations[sta_id].tid[tid].agg.state ==
 				IWL_EMPTYING_HW_QUEUE_ADDBA) {
 		IWL_DEBUG_HT(priv, "AGG stop before setup done\n");
-		ieee80211_stop_tx_ba_cb_irqsafe(priv->hw, ra, tid);
+		ieee80211_stop_tx_ba_cb_irqsafe(priv->vif, ra, tid);
 		priv->stations[sta_id].tid[tid].agg.state = IWL_AGG_OFF;
 		return 0;
 	}