iptables: xtables-eb: delete extra 'policy' printf

This message doesn't exist in the original ebtables tool.

Signed-off-by: Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
ebtables-compat: build ebtables extensions

This permits to build extensions for ebtables-compat layer.

Signed-off-by: Giuseppe Longo <giuseppelng@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>