[M] Change in coreboot[main]: acpi: Use boolean instead of int

[Elyes Haouas (Code Review)]

Attention is currently required from: Cliff Huang, Dinesh Gehlot, Eran Mitrani, Felix Held, Fred Reitberger, Jakub Czapiga, Jason Glenesk, Jayvik Desai, Kapil Porwal, Lance Zhao, Lean Sheng Tan, Matt DeVillier, Nick Vaccaro, Pranava Y N, Sean Rhodes, Subrata Banik, Tarun, Tim Wawrzynczak, Werner Zeh.

Elyes Haouas has posted comments on this change by Elyes Haouas. ( https://review.coreboot.org/c/coreboot/+/84914?usp=email )

Change subject: acpi: Use boolean instead of int
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Patch Set 2:

(1 comment)

File src/acpi/gnvs.c:

https://review.coreboot.org/c/coreboot/+/84914/comment/2461399f_c2f1d3ef?usp... :
PS2, Line 87: gnvs->pm1i = -1;
            : 	gnvs->gpei = -1;
Out of scope, 
is this better?
`*gnvs_ = &(struct global_nvs) {
        .pm1i = -1,
        .gpei = -1
    };`