ath9k: Add retry counters to rate control debug file

Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath9k/rc.c b/drivers/net/wireless/ath9k/rc.c
index 704b627..69a4ca4 100644
--- a/drivers/net/wireless/ath9k/rc.c
+++ b/drivers/net/wireless/ath9k/rc.c
@@ -1267,6 +1267,8 @@
 		ath_rc_priv->per_down_time = now_msec;
 	}
 
+	ath_debug_stat_retries(sc, tx_rate, xretries, retries);
+
 #undef CHK_RSSI
 }