netifd: ensure that a bridge gets created before hostapd needs it, hostapd must not attempt to create the bridge by itself

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@28745 3c298f89-4303-0410-b956-a3cf2f4a3e73

package/netifd/files/lib/network/config.sh

@@ -40,6 +40,13 @@ scan_interfaces() {
 	config_foreach fixup_interface interface
 }
 
+prepare_interface_bridge() {
+	local config="$1"
+
+	[ -n "$config" ] || return 0
+	ubus call network.interface."$config" prepare
+}
+
 setup_interface() {
 	local iface="$1"
 	local config="$2"