[S] Change in coreboot[main]: vc/google/chromeos: Add configurable compression for logo file in cbfs

[Julius Werner (Code Review)]

Attention is currently required from: Ashish Kumar Mishra, Karthik Ramasubramanian, Shelley Chen.

Julius Werner has posted comments on this change by Ashish Kumar Mishra. ( https://review.coreboot.org/c/coreboot/+/83420?usp=email )

Change subject: vc/google/chromeos: Add configurable compression for logo file in cbfs
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Patch Set 2:

(1 comment)

Patchset:

PS2: 
Is there really a platform where the most efficient compression algorithm for ramstage is LZMA but for the logo is LZ4? They get loaded under very similar conditions, so usually what's best for one should be best for the other.

I'd prefer to avoid having separate compression Kconfigs for every single file that all do their own thing. There should usually be a single answer per platform which algorithm is better that applies the same to all post-RAM files.