ath10k: fix tx legacy rate reporting

Tx legacy rate is reported 10 fold, as below

iw dev wlan#N station dump | grep "tx bitrate"
        tx bitrate:     240.0 MBit/s

This is because by mistake we multiply by the hardware reported
rate twice by 10, fix this.

Fixes: cec17c382140 ("ath10k: add per peer htt tx stats support for 10.4")
Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

drivers/net/wireless/ath/ath10k/htt_rx.c

@@ -2250,7 +2250,7 @@ ath10k_update_per_peer_tx_stats(struct ath10k *ar,
 		rate *= 10;
 		if (rate == 60 && txrate.flags == WMI_RATE_PREAMBLE_CCK)
 			rate = rate - 5;
-		arsta->txrate.legacy = rate * 10;
+		arsta->txrate.legacy = rate;
 	} else if (txrate.flags == WMI_RATE_PREAMBLE_HT) {
 		arsta->txrate.flags = RATE_INFO_FLAGS_MCS;
 		arsta->txrate.mcs = txrate.mcs;