[libata] sata_vsc: partially revert a PCI ID-related commit

Partially revert 74d0a988:

	[PATCH] PCI: Move various PCI IDs to header file

libata policy is to avoid use of named PCI device ID constants.
These are often single-use constants, which have little value over
direct numeric constants save for constant include/linux/pci_ids.h
patching/merging headaches.

Signed-off-by: Jeff Garzik <jeff@garzik.org>