src: use NFPROTO_ constants

Resync netfilter.h from the latest kernel and make use of the new
NFPROTO_ constants that have been introduced.

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
diff --git a/extensions/libxt_TOS.c b/extensions/libxt_TOS.c
index 55a7172..c185681 100644
--- a/extensions/libxt_TOS.c
+++ b/extensions/libxt_TOS.c
@@ -209,7 +209,7 @@
 	.version       = XTABLES_VERSION,
 	.name          = "TOS",
 	.revision      = 0,
-	.family        = AF_INET,
+	.family        = NFPROTO_IPV4,
 	.size          = XT_ALIGN(sizeof(struct xt_tos_target_info)),
 	.userspacesize = XT_ALIGN(sizeof(struct xt_tos_target_info)),
 	.help          = tos_tg_help_v0,
@@ -224,7 +224,7 @@
 	.version       = XTABLES_VERSION,
 	.name          = "TOS",
 	.revision      = 1,
-	.family        = AF_INET,
+	.family        = NFPROTO_IPV4,
 	.size          = XT_ALIGN(sizeof(struct xt_tos_target_info)),
 	.userspacesize = XT_ALIGN(sizeof(struct xt_tos_target_info)),
 	.help          = tos_tg_help,
@@ -238,7 +238,7 @@
 static struct xtables_target tos_tg6_reg = {
 	.version       = XTABLES_VERSION,
 	.name          = "TOS",
-	.family        = AF_INET6,
+	.family        = NFPROTO_IPV6,
 	.revision      = 1,
 	.size          = XT_ALIGN(sizeof(struct xt_tos_target_info)),
 	.userspacesize = XT_ALIGN(sizeof(struct xt_tos_target_info)),