net: Convert all sysctl registrations to register_net_sysctl

This results in code with less boiler plate that is a bit easier
to read.

Additionally stops us from using compatibility code in the sysctl
core, hastening the day when the compatibility code can be removed.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Acked-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/xfrm6_policy.c b/net/ipv6/xfrm6_policy.c
index 8ea65e0..8625fba 100644
--- a/net/ipv6/xfrm6_policy.c
+++ b/net/ipv6/xfrm6_policy.c
@@ -334,8 +334,8 @@
 		goto out_policy;
 
 #ifdef CONFIG_SYSCTL
-	sysctl_hdr = register_net_sysctl_table(&init_net, net_ipv6_ctl_path,
-						xfrm6_policy_table);
+	sysctl_hdr = register_net_sysctl(&init_net, "net/ipv6",
+					 xfrm6_policy_table);
 #endif
 out:
 	return ret;