cpu: Add support for Westmere CPU model (cherry picked from commit d4d5cccdf2e0ee277a1fae738f9a4423150509f8)
cpu: Add support for Westmere CPU model
(cherry picked from commit d4d5cccdf2e0ee277a1fae738f9a4423150509f8)

Signed-off-by: Steve Hodgson <eb20a6615749cf04ff61aa37e18f749ed6d01446@solarflare.com>

sshah-solarflare/Libvirt-PCI-passthrough-,sshah-solarflare/Libvirt-PCI-passthrough-,sshah-solarflare/Libvirt-PCI-passthrough-,sshah-solarflare/Libvirt-PCI-passthrough-,sshah-solarflare/Libvirt-PCI-passthrough-