rt2x00: Add "flush" queue command

Add a new command to the queue handlers: "flush",
this moves the flush() callback from mac80211
into rt2x00queue and adds support for flushing
the RX queue as well.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Acked-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/rt2x00/rt73usb.c b/drivers/net/wireless/rt2x00/rt73usb.c
index f55e74e..0b3959b 100644
--- a/drivers/net/wireless/rt2x00/rt73usb.c
+++ b/drivers/net/wireless/rt2x00/rt73usb.c
@@ -1077,8 +1077,6 @@
 	default:
 		break;
 	}
-
-	rt2x00usb_stop_queue(queue);
 }
 
 /*
@@ -2309,6 +2307,7 @@
 	.start_queue		= rt73usb_start_queue,
 	.kick_queue		= rt2x00usb_kick_queue,
 	.stop_queue		= rt73usb_stop_queue,
+	.flush_queue		= rt2x00usb_flush_queue,
 	.write_tx_desc		= rt73usb_write_tx_desc,
 	.write_beacon		= rt73usb_write_beacon,
 	.get_tx_data_len	= rt73usb_get_tx_data_len,