net: set name_assign_type in alloc_netdev()

Extend alloc_netdev{,_mq{,s}}() to take name_assign_type as argument, and convert
all users to pass NET_NAME_UNKNOWN.

Coccinelle patch:

@@
expression sizeof_priv, name, setup, txqs, rxqs, count;
@@

(
-alloc_netdev_mqs(sizeof_priv, name, setup, txqs, rxqs)
+alloc_netdev_mqs(sizeof_priv, name, NET_NAME_UNKNOWN, setup, txqs, rxqs)
|
-alloc_netdev_mq(sizeof_priv, name, setup, count)
+alloc_netdev_mq(sizeof_priv, name, NET_NAME_UNKNOWN, setup, count)
|
-alloc_netdev(sizeof_priv, name, setup)
+alloc_netdev(sizeof_priv, name, NET_NAME_UNKNOWN, setup)
)

v9: move comments here from the wrong commit

Signed-off-by: Tom Gundersen <teg@jklm.no>
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/ipv6/ip6_tunnel.c

@@ -315,7 +315,8 @@ static struct ip6_tnl *ip6_tnl_create(struct net *net, struct __ip6_tnl_parm *p)
 	else
 		sprintf(name, "ip6tnl%%d");
 
-	dev = alloc_netdev(sizeof (*t), name, ip6_tnl_dev_setup);
+	dev = alloc_netdev(sizeof(*t), name, NET_NAME_UNKNOWN,
+			   ip6_tnl_dev_setup);
 	if (dev == NULL)
 		goto failed;
 
@@ -1773,7 +1774,7 @@ static int __net_init ip6_tnl_init_net(struct net *net)
 
 	err = -ENOMEM;
 	ip6n->fb_tnl_dev = alloc_netdev(sizeof(struct ip6_tnl), "ip6tnl0",
-				      ip6_tnl_dev_setup);
+					NET_NAME_UNKNOWN, ip6_tnl_dev_setup);
 
 	if (!ip6n->fb_tnl_dev)
 		goto err_alloc_dev;