pktgen: use proc_create_data()

It looks like after rename device proc entry is unusable,
because of no ->read_proc or ->proc_fops.

And create_proc_entry() is deprecated.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/core/pktgen.c

@@ -1882,8 +1882,10 @@ static void pktgen_change_name(struct net_device *dev)
 
 			remove_proc_entry(pkt_dev->entry->name, pg_proc_dir);
 
-			pkt_dev->entry = create_proc_entry(dev->name, 0600,
-							   pg_proc_dir);
+			pkt_dev->entry = proc_create_data(dev->name, 0600,
+							  pg_proc_dir,
+							  &pktgen_if_fops,
+							  pkt_dev);
 			if (!pkt_dev->entry)
 				printk(KERN_ERR "pktgen: can't move proc "
 				       " entry for '%s'\n", dev->name);