same # of bthub devices created by default to match i386

pointed out by xsa@

src/etc/etc.macppc/MAKEDEV.md

@@ -1,5 +1,5 @@
 vers(__file__,
-	{-$OpenBSD: MAKEDEV.md,v 1.30 2007/07/25 13:10:14 todd Exp $-},
+	{-$OpenBSD: MAKEDEV.md,v 1.31 2007/07/25 14:19:36 todd Exp $-},
 etc.MACHINE)dnl
 dnl
 dnl Copyright (c) 2001-2006 Todd T. Fries <todd@OpenBSD.org>
@@ -125,7 +125,7 @@ target(all, vnd, 0, 1, 2, 3)dnl
 target(all, ccd, 0, 1, 2, 3)dnl
 target(all, gpio, 0, 1, 2)dnl
 target(all, bio)dnl
-target(all, bthub)dnl
+target(all, bthub, 0, 1, 2)dnl
 target(ramd, ttya, 0, 1)dnl
 target(ramd, ttyb, 0, 1)dnl
 target(ramd, pty, 0)dnl