firewall3: use list notation for default zone network config to avoid "uci add_list" coercing the value wrongly

SVN-Revision: 36806

package/network/config/firewall3/files/firewall.config

@@ -8,14 +8,15 @@ config defaults
 
 config zone
 	option name		lan
-	option network		'lan'
+	list   network		'lan'
 	option input		ACCEPT
 	option output		ACCEPT
 	option forward		REJECT
 
 config zone
 	option name		wan
-	option network		'wan wan6'
+	list   network		'wan'
+	list   network		'wan6'
 	option input		REJECT
 	option output		ACCEPT
 	option forward		REJECT