[M] Change in coreboot[main]: mb/google/nissa: Create meliks variant

[Subrata Banik (Code Review)]

Attention is currently required from: Dinesh Gehlot, Eric Lai, Jayvik Desai, Kapil Porwal, Nick Vaccaro, SH Kim.

Subrata Banik has posted comments on this change by SH Kim. ( https://review.coreboot.org/c/coreboot/+/86373?usp=email )

Change subject: mb/google/nissa: Create meliks variant
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Patch Set 6:

(1 comment)

Patchset:

PS6:
> It seems the VBT is requried for the coreboot build, where builder get the VBT file?
> The VBT for meliks has been added by this CL:
>
> https://chrome-internal-review.googlesource.com/c/chromeos/overlays/chipset-...
> Do we need this CL for the builder to get VBT from somewhere?
>
> https://chrome-internal-review.googlesource.com/c/chromeos/project/nissa/mel...
>
> Or should we except `select INTEL_GMA_HAVE_VBT` from Kconfig here and add it later?

I don't believe we need VBT here for passing coreboot build. can you please check other board kconfigs