ath10k:  add more details to some debug messages

Makes it easier to determine why some failures
happened.

Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c
index 301d960..3193294 100644
--- a/drivers/net/wireless/ath/ath10k/mac.c
+++ b/drivers/net/wireless/ath/ath10k/mac.c
@@ -3539,7 +3539,8 @@
 		}), ATH10K_FLUSH_TIMEOUT_HZ);
 
 	if (ret <= 0 || skip)
-		ath10k_warn("tx not flushed\n");
+		ath10k_warn("tx not flushed (skip %i ar-state %i): %i\n",
+			    skip, ar->state, ret);
 
 skip:
 	mutex_unlock(&ar->conf_mutex);