rt2x00: Reorganize queue callback functions

As part of the queue refactoring, change the queue callback
function names to have 3 different actions: start, kick & stop.

We can now also remove the STATE_RADIO_RX_ON/STATE_RADIO_RX_OFF
device_state flags, and replace the usage with using the
start_queue/stop_queue callback functions.
This streamlines the RX queue handling to the
similar approach as all other queues.

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/rt2x00usb.h b/drivers/net/wireless/rt2x00/rt2x00usb.h
index 656a35f..05a5424 100644
--- a/drivers/net/wireless/rt2x00/rt2x00usb.h
+++ b/drivers/net/wireless/rt2x00/rt2x00usb.h
@@ -378,13 +378,13 @@
 };
 
 /**
- * rt2x00usb_kick_tx_queue - Kick data queue
+ * rt2x00usb_kick_queue - Kick data queue
  * @queue: Data queue to kick
  *
  * This will walk through all entries of the queue and push all pending
  * frames to the hardware as a single burst.
  */
-void rt2x00usb_kick_tx_queue(struct data_queue *queue);
+void rt2x00usb_kick_queue(struct data_queue *queue);
 
 /**
  * rt2x00usb_stop_queue - Stop data queue