proc: remove proc_bus

Remove proc_bus export and variable itself. Using pathnames works fine
and is slightly more understandable and greppable.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/zorro/proc.c

@@ -128,7 +128,7 @@ static int __init zorro_proc_init(void)
 	u_int slot;
 
 	if (MACH_IS_AMIGA && AMIGAHW_PRESENT(ZORRO)) {
-		proc_bus_zorro_dir = proc_mkdir("zorro", proc_bus);
+		proc_bus_zorro_dir = proc_mkdir("bus/zorro", NULL);
 		create_proc_info_entry("devices", 0, proc_bus_zorro_dir,
 				       get_zorro_dev_info);
 		for (slot = 0; slot < zorro_num_autocon; slot++)