ath9k_htc: Add get_stats call back

currently this call back is used only in debugfs of mac80211
Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath/ath9k/htc_drv_main.c

@@ -1736,6 +1736,22 @@ static int ath9k_htc_set_bitrate_mask(struct ieee80211_hw *hw,
 	return ret;
 }
 
+
+static int ath9k_htc_get_stats(struct ieee80211_hw *hw,
+			       struct ieee80211_low_level_stats *stats)
+{
+	struct ath9k_htc_priv *priv = hw->priv;
+	struct ath_hw *ah = priv->ah;
+	struct ath9k_mib_stats *mib_stats = &ah->ah_mibStats;
+
+	stats->dot11ACKFailureCount = mib_stats->ackrcv_bad;
+	stats->dot11RTSFailureCount = mib_stats->rts_bad;
+	stats->dot11FCSErrorCount = mib_stats->fcs_bad;
+	stats->dot11RTSSuccessCount = mib_stats->rts_good;
+
+	return 0;
+}
+
 struct ieee80211_ops ath9k_htc_ops = {
 	.tx                 = ath9k_htc_tx,
 	.start              = ath9k_htc_start,
@@ -1759,4 +1775,5 @@ struct ieee80211_ops ath9k_htc_ops = {
 	.rfkill_poll        = ath9k_htc_rfkill_poll_state,
 	.set_coverage_class = ath9k_htc_set_coverage_class,
 	.set_bitrate_mask   = ath9k_htc_set_bitrate_mask,
+	.get_stats	    = ath9k_htc_get_stats,
 };