mac80211: clean up debugging

There are a few things that make the logging and
debugging in mac80211 less useful than it should
be right now:
 * a lot of messages should be pr_info, not pr_debug
 * wholesale use of pr_debug makes it require *both*
   Kconfig and dynamic configuration
 * there are still a lot of ifdefs
 * the style is very inconsistent, sometimes the
   sdata->name is printed in front

Clean up everything, introducing new macros and
separating out the station MLME debugging into
a new Kconfig symbol.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>

net/mac80211/status.c

@@ -155,13 +155,10 @@ static void ieee80211_handle_filtered_frame(struct ieee80211_local *local,
 		return;
 	}
 
-#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
-	if (net_ratelimit())
-		wiphy_debug(local->hw.wiphy,
-			    "dropped TX filtered frame, queue_len=%d PS=%d @%lu\n",
-			    skb_queue_len(&sta->tx_filtered[ac]),
-			    !!test_sta_flag(sta, WLAN_STA_PS_STA), jiffies);
-#endif
+	ps_dbg_ratelimited(sta->sdata,
+			   "dropped TX filtered frame, queue_len=%d PS=%d @%lu\n",
+			   skb_queue_len(&sta->tx_filtered[ac]),
+			   !!test_sta_flag(sta, WLAN_STA_PS_STA), jiffies);
 	dev_kfree_skb(skb);
 }