rt2x00: Add kill_tx_queue callback function

provide rt2x00lib the possibility to kill a particular TX queue.
This can be useful when disabling the radio, but more importantly
will allow beaconing to be disabled when mac80211 requests this
(during scanning for example)

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/rt2x00/rt2x00dev.c b/drivers/net/wireless/rt2x00/rt2x00dev.c
index e681d23..05f94e2 100644
--- a/drivers/net/wireless/rt2x00/rt2x00dev.c
+++ b/drivers/net/wireless/rt2x00/rt2x00dev.c
@@ -83,9 +83,10 @@
 		return;
 
 	/*
-	 * Stop the TX queues.
+	 * Stop the TX queues in mac80211.
 	 */
 	ieee80211_stop_queues(rt2x00dev->hw);
+	rt2x00queue_stop_queues(rt2x00dev);
 
 	/*
 	 * Disable RX.
@@ -157,7 +158,7 @@
 		return;
 
 	if (delayed_flags & DELAYED_UPDATE_BEACON)
-		rt2x00queue_update_beacon(rt2x00dev, vif);
+		rt2x00queue_update_beacon(rt2x00dev, vif, true);
 
 	if (delayed_flags & DELAYED_CONFIG_ERP)
 		rt2x00lib_config_erp(rt2x00dev, intf, &conf);