igmpproxy: add names for default config lan/wan phyint sections to make it...

igmpproxy: add names for default config lan/wan phyint sections to make it easier to refer to them from scripts

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

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@44896 3c298f89-4303-0410-b956-a3cf2f4a3e73

package/network/services/igmpproxy/files/igmpproxy.config

 config igmpproxy
 	option quickleave 1
 
-config phyint
+config phyint wan
 	option network wan
 	option direction upstream
 	list altnet 192.168.1.0/24
 
-config phyint
+config phyint lan
 	option network lan
 	option direction downstream