[M] Change in coreboot[main]: soc/intel/xeon_sp: Add soc_add_stack_mmios

[Patrick Rudolph (Code Review)]

Attention is currently required from: Arthur Heymans, Christian Walter, Johnny Lin, Jonathan Zhang, Lean Sheng Tan, Shuo Liu, Tim Chu.

Patrick Rudolph has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/81570?usp=email )

Change subject: soc/intel/xeon_sp: Add soc_add_stack_mmios
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Patch Set 1:

(2 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/81570/comment/0afa3202_293ce343 :
PS1, Line 10: unused IOAT MMIOs (CPM1 and HQM1). These resources are within stack
How do you read the stack MMIO range? is there a HOB for that?

https://review.coreboot.org/c/coreboot/+/81570/comment/b7b4aa36_cca9bd4f :
PS1, Line 10: unused
what does unused mean? When it decodes MMIO, it's not unused, is it?