ath10k: enable TDLS peer buffer STA feature

Enable TDLS peer buffer STA feature.
QCA6174 firmware(version: WLAN.RM.4.4) support TDLS peer buffer STA,
it reports this capability through wmi service map in wmi service ready
event. Set related parameter in TDLS WMI command to enable this feature.
Signed-off-by: Yingying Tang <yintang@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

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

@@ -8325,6 +8325,9 @@ int ath10k_mac_register(struct ath10k *ar)
 			ieee80211_hw_set(ar->hw, TDLS_WIDER_BW);
 	}
 
+	if (test_bit(WMI_SERVICE_TDLS_UAPSD_BUFFER_STA, ar->wmi.svc_map))
+		ieee80211_hw_set(ar->hw, SUPPORTS_TDLS_BUFFER_STA);
+
 	ar->hw->wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
 	ar->hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
 	ar->hw->wiphy->max_remain_on_channel_duration = 5000;

drivers/net/wireless/ath/ath10k/wmi-tlv.c

@@ -2886,6 +2886,9 @@ ath10k_wmi_tlv_op_gen_update_fw_tdls_state(struct ath10k *ar, u32 vdev_id,
 	 */
 	u32 options = 0;
 
+	if (test_bit(WMI_SERVICE_TDLS_UAPSD_BUFFER_STA, ar->wmi.svc_map))
+		options |=  WMI_TLV_TDLS_BUFFER_STA_EN;
+
 	len = sizeof(*tlv) + sizeof(*cmd);
 	skb = ath10k_wmi_alloc_skb(ar, len);
 	if (!skb)