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/dsa/slave.c

@@ -340,8 +340,8 @@ dsa_slave_create(struct dsa_switch *ds, struct device *parent,
 	struct dsa_slave_priv *p;
 	int ret;
 
-	slave_dev = alloc_netdev(sizeof(struct dsa_slave_priv),
-				 name, ether_setup);
+	slave_dev = alloc_netdev(sizeof(struct dsa_slave_priv), name,
+				 NET_NAME_UNKNOWN, ether_setup);
 	if (slave_dev == NULL)
 		return slave_dev;