[S] Change in coreboot[master]: soc/amd/*/acpi: don't write unused p_lvl[2,3]_lat FADT fields

[Felix Held (Code Review)]

Attention is currently required from: Jason Glenesk, Raul Rangel, Matt DeVillier, Martin Roth, Fred Reitberger.

Felix Held has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/73231 )

Change subject: soc/amd/*/acpi: don't write unused p_lvl[2,3]_lat FADT fields
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Patch Set 1:

(1 comment)

File src/soc/amd/cezanne/acpi.c:

https://review.coreboot.org/c/coreboot/+/73231/comment/2bdd1ce0_85c21b8e 
PS1, Line 79: ACPI_FADT_C2_NOT_SUPPORTED
> Are we zeroing the structure before filling it in, or by removing these are we leaving random data t […]

the fadt struct is zero'd and prepopulated before we populate it further in here. none of the intel socs changes the values of those fields from 0 to something else and setting it here to unsupported and then overriding this via the _CST package is at least to me quite misleading