[PATCH] PCI: Add PCI quirk for SMBus on the Asus P4B-LX

One more Asus motherboard requiring the SMBus quirk (P4B-LX). Original
patch from Salah Coronya.

Signed-off-by: Salah Coronya <salahx@yahoo.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>