[NETFILTER]: xt_mac/xt_CLASSIFY: use IPv6 hook names for IPv6 registration

Use NF_IP6_ instead of NF_IP_. The values are identical, this is merely
cleanup.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/netfilter/xt_mac.c b/net/netfilter/xt_mac.c
index 425fc21..d430d90 100644
--- a/net/netfilter/xt_mac.c
+++ b/net/netfilter/xt_mac.c
@@ -14,6 +14,7 @@
 #include <linux/etherdevice.h>
 
 #include <linux/netfilter_ipv4.h>
+#include <linux/netfilter_ipv6.h>
 #include <linux/netfilter/xt_mac.h>
 #include <linux/netfilter/x_tables.h>
 
@@ -59,9 +60,9 @@
 		.family		= AF_INET6,
 		.match		= match,
 		.matchsize	= sizeof(struct xt_mac_info),
-		.hooks		= (1 << NF_IP_PRE_ROUTING) |
-				  (1 << NF_IP_LOCAL_IN) |
-				  (1 << NF_IP_FORWARD),
+		.hooks		= (1 << NF_IP6_PRE_ROUTING) |
+				  (1 << NF_IP6_LOCAL_IN) |
+				  (1 << NF_IP6_FORWARD),
 		.me		= THIS_MODULE,
 	},
 };