firewall: add firewall bridge IP for UI access

when firewall switched to bridge mode, we want to
have WebUI access to manage the firewall, allow user
setup IP address on the firewall bridge interface through
the UI.

Signed-off-by: Vincent Li <vincent.mc.li@gmail.com>

src/initscripts/system/firewall

@@ -456,6 +456,8 @@ iptables_init() {
 		ip link set $RED_DEV master $FWBRIDGE
 		ip link set $GREEN_DEV master $FWBRIDGE
 		ip link set $FWBRIDGE up
+		ip a add $FWBRIDGEIP/$FWBRIDGEMASK dev $FWBRIDGE
+		iptables -t filter -A GUIINPUT -i $FWBRIDGE -p tcp -m tcp --dport 444 -j ACCEPT
 	fi
 }