make netfilter use strict integer types

make netfilter use strict integer types

Netfilter traditionally uses BSD integer types in its
interface headers. This changes it to use the Linux
strict integer types, like everyone else.

Cc: netfilter-devel@vger.kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>