Don't allow get_physical to attempt get_pte if mmutype is 68040.

(At least until get_pte works on the 040).

sys/arch/mac68k/mac68k/machdep.c

@@ -1,4 +1,4 @@
-/*	$NetBSD: machdep.c,v 1.116 1996/09/16 18:00:30 scottr Exp $	*/
+/*	$NetBSD: machdep.c,v 1.117 1996/09/18 03:33:23 briggs Exp $	*/
 
 /*
  * Copyright (c) 1988 University of Utah.
@@ -2395,6 +2395,9 @@ get_physical(u_int addr, u_long * phys)
 	int     i, numbits;
 	extern u_int macos_tc;
 
+	if (mmutype == MMU_68040)
+		return 0;
+
 	i = get_pte(addr, pte, &psr);
 
 	switch (i) {