ata_piix: add Toshiba Tecra M4 to broken suspend list

Add Toshiba Tecra M4 to broken suspend list.  This is from OSDL
bugzilla bug 7780.

Signed-off-by: Peter Schwenke <peter@bluetoad.com.au>
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

drivers/ata/ata_piix.c

@@ -973,6 +973,13 @@ static int piix_broken_suspend(void)
 				DMI_MATCH(DMI_PRODUCT_NAME, "Tecra M3"),
 			},
 		},
+		{
+			.ident = "TECRA M4",
+			.matches = {
+				DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
+				DMI_MATCH(DMI_PRODUCT_NAME, "Tecra M4"),
+			},
+		},
 		{
 			.ident = "TECRA M5",
 			.matches = {