set default input policy to ACCEPT to bring the firewall behavior closer to...

set default input policy to ACCEPT to bring the firewall behavior closer to the one of previous versions

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@12766 3c298f89-4303-0410-b956-a3cf2f4a3e73

package/firewall/files/firewall.config

 config defaults
 	option syn_flood	1
-	option input		REJECT
+	option input		ACCEPT
 	option output		ACCEPT 
 	option forward		REJECT