mac80211: fix list_phy_interfaces for multiple wiphys on the same device

Network interfaces are looked up based on the device behind a phy, so the
phy needs to be checked separately

Signed-off-by: Felix Fietkau <nbd@nbd.name>

package/kernel/mac80211/files/lib/netifd/wireless/mac80211.sh

@@ -983,7 +983,7 @@ drv_mac80211_setup() {
 	wireless_set_up
 }
 
-list_phy_interfaces() {
+_list_phy_interfaces() {
 	local phy="$1"
 	if [ -d "/sys/class/ieee80211/${phy}/device/net" ]; then
 		ls "/sys/class/ieee80211/${phy}/device/net" 2>/dev/null;
@@ -992,6 +992,15 @@ list_phy_interfaces() {
 	fi
 }
 
+list_phy_interfaces() {
+	local phy="$1"
+
+	for dev in $(_list_phy_interfaces "$phy"); do
+		readlink "/sys/class/net/${dev}/phy80211" | grep -q "/${phy}\$" || continue
+		echo "$dev"
+	done
+}
+
 drv_mac80211_teardown() {
 	wireless_process_kill_all