Change in flashrom[master]: Add support to get layout from fmap (e.g. coreboot rom)

[David Hendricks (Code Review)]

David Hendricks has posted comments on this change. ( https://review.coreboot.org/23203 )

Change subject: Add support to get layout from fmap (e.g. coreboot rom)
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Patch Set 26: Verified+1

I ran this thru another round of testing (using an rpi) similar as before - using --fmap with a bsearchable fmap, --fmap with non-bsearchable fmap, and --fmap-file, and it works fine.

This is also blocking some of Philipp's work, so it would be great to get it in very soon.