[PATCH] platform update for ES7000

This update only applies to Unisys' ES7000 server machines.  The patch adds
a OEM id check to verify the current machine running is actually a Unisys
type box before executing the Unisys OEM parser routine.  It also increases
the MAX_MP_BUSSES definition from 32 to 256.  On the ES7000s, bus ID
numbering can range from 0 to 255.  Without the patch, the system panics if
booted with acpi=off.

This patch has been tested and verified on an authentic ES7000 machine.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

include/asm-i386/mach-es7000/mach_mpparse.h

@@ -21,7 +21,8 @@ static inline int mps_oem_check(struct mp_config_table *mpc, char *oem,
 	if (mpc->mpc_oemptr) {
 		struct mp_config_oemtable *oem_table = 
 			(struct mp_config_oemtable *)mpc->mpc_oemptr;
-		return parse_unisys_oem((char *)oem_table, oem_table->oem_length);
+		if (!strncmp(oem, "UNISYS", 6))
+			return parse_unisys_oem((char *)oem_table, oem_table->oem_length);
 	}
 	return 0;
 }