[L] Change in coreboot[main]: superio/ite: Unify it8772f with common code

[Matt DeVillier (Code Review)]

Attention is currently required from: Joel Linn, Michał Żygowski, MrChromebox, Nico Huber, Piotr Król.

Matt DeVillier has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/81310?usp=email )

Change subject: superio/ite: Unify it8772f with common code
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Patch Set 5:

(1 comment)

File src/mainboard/google/beltino/devicetree.cb:

https://review.coreboot.org/c/coreboot/+/81310/comment/b3931820_c6a45e90 :
PS4, Line 86: 					register "FAN2.mode" = "FAN_SMART_SOFTWARE"
> Matt, would you have a Beltino at hand to test if this feels like a regression? […]

in my tree, I have it set to 30% at startup, just so we don't have zero fan control until ACPI takes over. I'll push a follow-on patch for all the IT8772F ChromeOS devices setting it there