[S] Change in coreboot[main]: intel/common/block: Use fixed BDF for IBL

[Arthur Heymans (Code Review)]

Attention is currently required from: David Hendricks, Jonathan Zhang, Shuo Liu, TangYiwei.

Arthur Heymans has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/81321?usp=email )

Change subject: intel/common/block: Use fixed BDF for IBL
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Patch Set 1: Code-Review-1

(1 comment)

Commit Message:

https://review.coreboot.org/c/coreboot/+/81321/comment/aeddf57c_1128ee69 :
PS1, Line 9: IBL codes doesn't support bootloader controlled P2SB hidden and
           : unhidden.
What does this mean? Is there even a P2SB? If you cannot use P2SB code because of that you should simply not use this code rather than leaking awkward soc specific details in the common code.