[S] Change in coreboot[master]: cpu/x86/mp_init.c: Use existing code to create cpu struct device

[Arthur Heymans (Code Review)]

Attention is currently required from: Angel Pons, Arthur Heymans, Kyösti Mälkki.

Arthur Heymans has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/64341 )

Change subject: cpu/x86/mp_init.c: Use existing code to create cpu struct device
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Patch Set 7:

(1 comment)

Patchset:

PS5:
> If a CPU device exists but isn't enabled, using `add_cpu_device()` will enable it. Is this a problem?

Only if someone added them to the devicetree, which is not the case. https://review.coreboot.org/c/coreboot/+/68892/4 fixes that btw.