rt2x00: Report RX end time for rt2400pci

rt2400 is the only currently available rt2x00 driver which
supports reporting of the RX end time for frames.
Since mac80211 uses this information for IBSS syncing, it
is important that it is being reported.

v2: Complement 32 bits of RX timestamp with upper 32bits from TSF

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/rt2x00queue.h b/drivers/net/wireless/rt2x00/rt2x00queue.h
index 5dd9cca..8945945 100644
--- a/drivers/net/wireless/rt2x00/rt2x00queue.h
+++ b/drivers/net/wireless/rt2x00/rt2x00queue.h
@@ -146,6 +146,7 @@
  *
  * Summary of information that has been read from the RX frame descriptor.
  *
+ * @timestamp: RX Timestamp
  * @signal: Signal of the received frame.
  * @rssi: RSSI of the received frame.
  * @size: Data size of the received frame.
@@ -154,6 +155,7 @@
 
  */
 struct rxdone_entry_desc {
+	u64 timestamp;
 	int signal;
 	int rssi;
 	int size;