ath5k: Count how many times a queue got stuck

Add a counter to show how many times a queue got stuck in the debugfs queue
file.

Signed-off-by: Bruno Randolf <br1@einfach.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath5k/debug.c b/drivers/net/wireless/ath/ath5k/debug.c
index b2c610b..6583a82 100644
--- a/drivers/net/wireless/ath/ath5k/debug.c
+++ b/drivers/net/wireless/ath/ath5k/debug.c
@@ -785,6 +785,8 @@
 
 		len += snprintf(buf+len, sizeof(buf)-len,
 				"  len: %d bufs: %d\n", txq->txq_len, n);
+		len += snprintf(buf+len, sizeof(buf)-len,
+				"  stuck: %d\n", txq->txq_stuck);
 	}
 
 	if (len > sizeof(buf))