wifi: mt76: mt7996: Export MLO AP capabilities to mac80211

Report MT7996 MLO AP capabilities to mac80211 stack.

Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Co-developed-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20250827-mt7996-mlo-ap-capa-v1-1-b5cfbcafa25f@kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>

Author: csyuanc

drivers/net/wireless/mediatek/mt76/mt7996/init.c

@@ -63,6 +63,24 @@ static const struct ieee80211_iface_combination if_comb = {
 	.beacon_int_min_gcd = 100,
 };
 
+static const u8 if_types_ext_capa_ap[] = {
+	[0] = WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING,
+	[2] = WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT,
+	[7] = WLAN_EXT_CAPA8_OPMODE_NOTIF,
+};
+
+static const struct wiphy_iftype_ext_capab iftypes_ext_capa[] = {
+	{
+		.iftype = NL80211_IFTYPE_AP,
+		.extended_capabilities = if_types_ext_capa_ap,
+		.extended_capabilities_mask = if_types_ext_capa_ap,
+		.extended_capabilities_len = sizeof(if_types_ext_capa_ap),
+		.mld_capa_and_ops =
+			FIELD_PREP_CONST(IEEE80211_MLD_CAP_OP_MAX_SIMUL_LINKS,
+					 MT7996_MAX_RADIOS - 1),
+	},
+};
+
 static ssize_t mt7996_thermal_temp_show(struct device *dev,
 					struct device_attribute *attr,
 					char *buf)
@@ -463,8 +481,11 @@ mt7996_init_wiphy(struct ieee80211_hw *hw, struct mtk_wed_device *wed)
 	wiphy->radio = dev->radios;
 
 	wiphy->reg_notifier = mt7996_regd_notifier;
-	wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
+	wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH |
+			WIPHY_FLAG_SUPPORTS_MLO;
 	wiphy->mbssid_max_interfaces = 16;
+	wiphy->iftype_ext_capab = iftypes_ext_capa;
+	wiphy->num_iftype_ext_capab = ARRAY_SIZE(iftypes_ext_capa);
 
 	wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_BSS_COLOR);
 	wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_VHT_IBSS);