Change in coreboot[master]: soc/amd/*: PSP verstage minbuild

[Raul Rangel (Code Review)]

Attention is currently required from: Jason Glenesk, Martin Roth, Marshall Dawson, Felix Held.
Raul Rangel has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/59585 )

Change subject: soc/amd/*: PSP verstage minbuild
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Patch Set 2:

(1 comment)

Commit Message:

https://review.coreboot.org/c/coreboot/+/59585/comment/3e6cbe5b_0a3b58f0 
PS2, Line 9: The PSP that is supplied for Picasso AMD-based chromebooks currently
           : requires a psp_verstage to boot
:( this seems unfortunate. Does that mean that non chromeos boards currently don't work? This approach is going to result in the PSP entering developer mode since this verstage blob isn't signed. I think we should push on AMD to fix this in the PSP.