Change in coreboot[master]: soc/intel/alderlake: set power limits dynamically for thermal

[EricR Lai (Code Review)]

Attention is currently required from: Furquan Shaikh, Tim Wawrzynczak, Sumeet R Pawnikar, Patrick Rudolph, Karthik Ramasubramanian.
EricR Lai has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/57035 )

Change subject: soc/intel/alderlake: set power limits dynamically for thermal
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Patch Set 8: Code-Review+1

(2 comments)

Patchset:

PS8: 
Others LGTM.

File src/soc/intel/alderlake/systemagent.c:

https://review.coreboot.org/c/coreboot/+/57035/comment/9415a933_3763ac82 
PS8, Line 74: 	sa_pci_id = sa ? pci_read_config16(sa, PCI_DEVICE_ID) : 0xFFFF;
if sa_pci_id == 0xFFFF should we halt? or assert some error?