[coreboot] [PATCH]Load VSA from CBFS on amd/gx2

[Patrick Georgi]

Hi,

attached patch makes coreboot load VSA from CBFS on amd/gx2. It's very
similar to the recent change to amd/lx (3 weeks ago), in fact, it's a
copy&paste from there.
Build tested, but I don't have the hardware around to test operation,
but the lx variant was tested.

Most notably, the gx2 code was definitely broken before with some
commented out coreboot-v3 code to load the image to the right place, so
no loading took place at all.

Signed-off-by: Patrick Georgi

Regards,
Patrick Georgi