[M] Change in coreboot[main]: mb/google/brya: Remove baseboard-specific FMD names

[Subrata Banik (Code Review)]

Attention is currently required from: Dinesh Gehlot, Eric Lai, Kapil Porwal, Nick Vaccaro, Sumeet R Pawnikar.

Subrata Banik has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/81676?usp=email )

Change subject: mb/google/brya: Remove baseboard-specific FMD names
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Patch Set 2:

(2 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/81676/comment/2046abbf_99b3d89a :
PS2, Line 11:  Additionally, this patch removes the Nissa-specific
            : 32MB FMD file, as the Nissa board only uses a 16MB SPI flash.
i guess you said that some Nissa variant also uses 32MB fmd file ? so, better we call out here that this CL attempts to unify 32MB FMD between brya and nissa variants.

Also, please test the 32MB unified FMD booting for Nivviks.

https://review.coreboot.org/c/coreboot/+/81676/comment/7d88b919_e8e8942f :
PS2, Line 14: 
please create a bug id for trulo baseboard support and use that here.