ata_piix: add ICH6/7/8 to Kconfig

Ata_piix's Kconfig entry still refers only to ICH5, while it supports ICH6 through 8. This creates confusion with people who are looking to see if their newer SATA enabled motherboards are supported. The following patch makes this clear.

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This patch is against:

     linus-2.6.git/d384ea691fe4ea8c2dd5b9b8d9042eb181776f18

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 drivers/scsi/Kconfig |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

index a480a37..98b1da8 100644
@@ -501,7 +501,7 @@ config SCSI_ATA_PIIX
 	tristate "Intel PIIX/ICH SATA support"
 	depends on SCSI_SATA && PCI
 	help
-	  This option enables support for ICH5 Serial ATA.
+	  This option enables support for ICH5/6/7/8 Serial ATA.
 	  If PATA support was enabled previously, this enables
 	  support for select Intel PIIX/ICH PATA host controllers.
 

applied