netlink: hide struct module parameter in netlink_kernel_create

This patch defines netlink_kernel_create as a wrapper function of
__netlink_kernel_create to hide the struct module *me parameter
(which seems to be THIS_MODULE in all existing netlink subsystems).

Suggested by David S. Miller.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index ab58034..354070a 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -2963,7 +2963,7 @@
 		.input	= xfrm_netlink_rcv,
 	};
 
-	nlsk = netlink_kernel_create(net, NETLINK_XFRM, THIS_MODULE, &cfg);
+	nlsk = netlink_kernel_create(net, NETLINK_XFRM, &cfg);
 	if (nlsk == NULL)
 		return -ENOMEM;
 	net->xfrm.nlsk_stash = nlsk; /* Don't set to NULL */