[PATCH] piix: add Intel ICH8M device IDs

Signed-off-by: Jason Gaston <Jason.d.gaston@intel.com>
Acked-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>