Change in coreboot[master]: amdfwtool: Use relative address for EFS gen2

[Felix Held (Code Review)]

Attention is currently required from: Bao Zheng, Martin Roth, Marshall Dawson, Kangheui Won, Paul Menzel, Zheng Bao, Eric Peers, Karthik Ramasubramanian, Karthikeyan Ramasubramanian.
Felix Held has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/56438 )

Change subject: amdfwtool: Use relative address for EFS gen2
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Patch Set 19:

(1 comment)

Commit Message:

https://review.coreboot.org/c/coreboot/+/56438/comment/e5af5a51_8f85dfcd 
PS2, Line 9: The second generation EFS (offset 0x24[0]=0) uses
           : "binary relative" offsets and not "x86 physical
           : MMIO address" like gen1.
           : 
           : Chips like Cezanne can run in both cases, so no problem
           : comes up so far.
           : 
           : TODO: Need to fix the problem in psp_verstage.
> ok, then lets wait until the signed verstage binary with the fix to support relative addresses has l […]

Karthik: has the updated signed verstage on psp binary landed that we can submit this patch?