ath9k: Improve debugfs printout for stations.

Add interface address so it can be mapped to a local
interface.  Add max-ampdu and mpdu-density.

Print out the tid->baw_size

Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index e1e006d..e43c41c 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -630,7 +630,8 @@
 	}
 }
 
-static void ath_node_attach(struct ath_softc *sc, struct ieee80211_sta *sta)
+static void ath_node_attach(struct ath_softc *sc, struct ieee80211_sta *sta,
+			    struct ieee80211_vif *vif)
 {
 	struct ath_node *an;
 	an = (struct ath_node *)sta->drv_priv;
@@ -640,6 +641,7 @@
 	list_add(&an->list, &sc->nodes);
 	spin_unlock(&sc->nodes_lock);
 	an->sta = sta;
+	an->vif = vif;
 #endif
 	if (sc->sc_flags & SC_OP_TXAGGR) {
 		ath_tx_node_init(sc, an);
@@ -1800,7 +1802,7 @@
 	struct ath_node *an = (struct ath_node *) sta->drv_priv;
 	struct ieee80211_key_conf ps_key = { };
 
-	ath_node_attach(sc, sta);
+	ath_node_attach(sc, sta, vif);
 
 	if (vif->type != NL80211_IFTYPE_AP &&
 	    vif->type != NL80211_IFTYPE_AP_VLAN)