Update the k8 code for the v3 resource allocator.

Update the k8 code for the v3 resource allocator.
The major change is that the K8 registers don't get touched until the end of
resource allocation.

Fam10 code could be updated the same way.

Move VGA code before resource allocation but after device enumeration.

Signed-off-by: Myles Watson <mylesgw@gmail.com>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4395 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1