[coreboot] PATCH: Add support for Virtensys 2uRack and Napoli

[Edwin Beasant]

Add Virtensys as a Manufacturer to the build sytem, and add their products.
Virtensys products use AMD Geode LX in configuration very similar to AMD Norwich designs.
Virtensys boards differ in the following ways from the reference implementation.
No PCI Physical Slots.
Intel 1Gig Ethernet onboard.
Pericom PCI->PCIe bridge onboard.
Napoli represents the Blade range of products
2uRack represents the 2u Rackable products.

Signed-off-by: Edwin Beasant [e-mail]
Edwin Beasant