netfilter: nf_tables: add support for native socket matching

Now it can only match the transparent flag of an ip/ipv6 socket.

Signed-off-by: Máté Eckl <ecklm94@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
diff --git a/net/netfilter/Makefile b/net/netfilter/Makefile
index 9b34343..eec1695 100644
--- a/net/netfilter/Makefile
+++ b/net/netfilter/Makefile
@@ -102,6 +102,7 @@
 obj-$(CONFIG_NFT_FIB_INET)	+= nft_fib_inet.o
 obj-$(CONFIG_NFT_FIB_NETDEV)	+= nft_fib_netdev.o
 obj-$(CONFIG_NF_OSF)		+= nf_osf.o
+obj-$(CONFIG_NFT_SOCKET)	+= nft_socket.o
 
 # nf_tables netdev
 obj-$(CONFIG_NFT_DUP_NETDEV)	+= nft_dup_netdev.o