ath10k: better tx/rx debugging

Make it easier to grep for htt rx errors.

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/htt_tx.c b/drivers/net/wireless/ath/ath10k/htt_tx.c
index f1d36d2..acaa046 100644
--- a/drivers/net/wireless/ath/ath10k/htt_tx.c
+++ b/drivers/net/wireless/ath/ath10k/htt_tx.c
@@ -460,9 +460,9 @@
 					   DMA_TO_DEVICE);
 	}
 
-	ath10k_dbg(ATH10K_DBG_HTT, "msdu 0x%llx\n",
+	ath10k_dbg(ATH10K_DBG_HTT, "tx-msdu 0x%llx\n",
 		   (unsigned long long) ATH10K_SKB_CB(msdu)->paddr);
-	ath10k_dbg_dump(ATH10K_DBG_HTT_DUMP, NULL, "msdu: ",
+	ath10k_dbg_dump(ATH10K_DBG_HTT_DUMP, NULL, "tx-msdu: ",
 			msdu->data, msdu->len);
 
 	skb_put(txdesc, desc_len);