[S] Change in coreboot[main]: soc/intel/xeon_sp: Report RCiEPs under DRHD

[Arthur Heymans (Code Review)]

Attention is currently required from: Christian Walter, Jincheng Li, Johnny Lin, Jonathan Zhang, Lean Sheng Tan, Patrick Rudolph, Shuo Liu, Tim Chu.

Arthur Heymans has posted comments on this change by Shuo Liu. ( https://review.coreboot.org/c/coreboot/+/84315?usp=email )

Change subject: soc/intel/xeon_sp: Report RCiEPs under DRHD
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Patch Set 1:

(2 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/84315/comment/9b343b40_67563a9f?usp... :
PS1, Line 7: RCiEPs
What are RCiEPs?

https://review.coreboot.org/c/coreboot/+/84315/comment/70b65fbe_6693c048?usp... :
PS1, Line 9: In case of a PCH-less platform, all RCiEPs should be listed under
           : its specific DRHD
Could you provide a bit more explanation? Reporting all endpoint devices was not needed on previous generations?