netfilter: xtables: fix a bunch of typos causing some targets to not load on IPv6

The xt_NFLOG and xt_MARK changes were added with the wrong family
in 0bfcb7b71e73, which seems to just have been a typo,
but now ip6tables rules with --set-mark don't work anymore,
which is pretty bad.

Pablo spotted another typo introduced in the same commit in xt_TRACE.

Fixes: 0bfcb7b71e73 ("netfilter: xtables: avoid NFPROTO_UNSPEC where needed")
Reviewed-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Ilya Katsnelson <me@0upti.me>
Cherry-picked-for: https://gitlab.archlinux.org/archlinux/packaging/packages/linux/-/issues/87

net/netfilter/xt_NFLOG.c

@@ -79,7 +79,7 @@ static struct xt_target nflog_tg_reg[] __read_mostly = {
 	{
 		.name       = "NFLOG",
 		.revision   = 0,
-		.family     = NFPROTO_IPV4,
+		.family     = NFPROTO_IPV6,
 		.checkentry = nflog_tg_check,
 		.destroy    = nflog_tg_destroy,
 		.target     = nflog_tg,

net/netfilter/xt_TRACE.c

@@ -49,6 +49,7 @@ static struct xt_target trace_tg_reg[] __read_mostly = {
 		.target		= trace_tg,
 		.checkentry	= trace_tg_check,
 		.destroy	= trace_tg_destroy,
+		.me		= THIS_MODULE,
 	},
 #endif
 };

net/netfilter/xt_mark.c

@@ -62,7 +62,7 @@ static struct xt_target mark_tg_reg[] __read_mostly = {
 	{
 		.name           = "MARK",
 		.revision       = 2,
-		.family         = NFPROTO_IPV4,
+		.family         = NFPROTO_IPV6,
 		.target         = mark_tg,
 		.targetsize     = sizeof(struct xt_mark_tginfo2),
 		.me             = THIS_MODULE,