ath10k: add tracing for ath10k_htt_pktlog

This is useful for collecting pktlog statistics of tx, rx
and rate information, so add tracing for the API call.

Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
diff --git a/drivers/net/wireless/ath/ath10k/htt.h b/drivers/net/wireless/ath/ath10k/htt.h
index 3b44217..15c58e8 100644
--- a/drivers/net/wireless/ath/ath10k/htt.h
+++ b/drivers/net/wireless/ath/ath10k/htt.h
@@ -725,7 +725,7 @@
  */
 struct htt_pktlog_msg {
 	u8 pad[3];
-	__le32 payload[1 /* or more */];
+	u8 payload[0];
 } __packed;
 
 struct htt_dbg_stats_rx_reorder_stats {