ath9k: Add more information to debugfs xmit file.

Should help debug strange tx lockup type issues.

Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c
index ad569e1..aa67d64 100644
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -2039,6 +2039,7 @@
 			spin_unlock_bh(&txq->axq_lock);
 			break;
 		}
+		TX_STAT_INC(txq->axq_qnum, txprocdesc);
 
 		/*
 		 * Remove ath_buf's of the same transmit unit from txq,