do not disable netfilter support for xburst target (some packages require netfilter support)

SVN-Revision: 20698

target/linux/xburst/config-2.6.32

@@ -204,7 +204,6 @@ CONFIG_MTD_UBI=y
 # CONFIG_N516_LPC is not set
 # CONFIG_NETDEV_1000 is not set
 # CONFIG_NET_ETHERNET is not set
-# CONFIG_NETFILTER is not set
 # CONFIG_NET_SCHED is not set
 # CONFIG_NETWORK_FILESYSTEMS is not set
 # CONFIG_NEW_LEDS is not set