mt7601u: enable TDLS support

Notify mac80211 the mt7601u chipset support 802.11 TDLS. The feature has
been tested with a mt7610u peer.
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/8f9fd662cdbbb70ba896f1bea80e696b15011d3f.1614536496.git.lorenzo@kernel.org

drivers/net/wireless/mediatek/mt7601u/init.c

@@ -610,6 +610,7 @@ int mt7601u_register_device(struct mt7601u_dev *dev)
 
 	wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR;
 	wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
+	wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
 
 	wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);