Add a PCI ID for santa rosa's PATA controller.

Signed-off-by: Christian Lamparter <chunkeey@web.de>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c
index 924e447..76cbdf0 100644
--- a/drivers/ata/ata_piix.c
+++ b/drivers/ata/ata_piix.c
@@ -200,6 +200,8 @@
 	/* ICH7/7-R (i945, i975) UDMA 100*/
 	{ 0x8086, 0x27DF, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_133 },
 	{ 0x8086, 0x269E, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
+	/* ICH8 Mobile PATA Controller */
+	{ 0x8086, 0x2850, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
 
 	/* NOTE: The following PCI ids must be kept in sync with the
 	 * list in drivers/pci/quirks.c.