[L] Change in coreboot[main]: acpi: Add PPTT support

[Arthur Heymans (Code Review)]

Attention is currently required from: Angel Pons, Cliff Huang, David Milosevic, Lance Zhao, Martin L Roth, Maximilian Brune, Nico Huber, Patrick Rudolph, Tim Wawrzynczak.

Arthur Heymans has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/78071?usp=email )

Change subject: acpi: Add PPTT support
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Patch Set 23: Code-Review+2

(1 comment)

File src/acpi/acpi_pptt.c:

https://review.coreboot.org/c/coreboot/+/78071/comment/afe38fa7_b2ce477a :
PS21, Line 148: 		cpu_node->resources[cpu_node->n_resources++] = new_pptt_cache(current, it->cache, cache_list);
> Considered doing that. Not sure anymore why exactly, but I decided against it. I think the current solution is fine.

You'd need to loop through the topology twice to achieve that. Once to get all the cache references, then a second time to generate CPU entries. This is fine.