nubus: Don't use create_proc_entry()

Don't use create_proc_entry() in nubus_proc_subdir().  The files created aren't
given any way to use them, so for the moment use create_proc_read_entry() with
a NULL accessor and generate a compile-time warning.
Signed-off-by: NDavid Howells <dhowells@redhat.com>

drivers/nubus/proc.c

@@ -73,8 +73,9 @@ static void nubus_proc_subdir(struct nubus_dev* dev,
 		struct proc_dir_entry* e;
 		
 		sprintf(name, "%x", ent.type);
-		e = create_proc_entry(name, S_IFREG | S_IRUGO |
-				      S_IWUSR, parent);
+#warning Need to set some I/O handlers here
+		e = create_proc_read_entry(name, S_IFREG | S_IRUGO | S_IWUSR,
+					   parent, NULL, NULL);
 		if (!e) return;
 	}
 }