tree 1848a1c31000afb872807cfa5bbb142cc8a22bc8
parent 1ccc3cd484fad1c9121dd016326713556ae41b2b
author Matt Ziegelbaum <ziegs@chromium.org> 1604956124 -0500
committer Commit Bot <commit-bot@chromium.org> 1604974120 +0000

variant: make script work for boards with different coreboot reference

Ambassador program uses --board=ambassador, but uses the Puff templates
as its coreboot reference. This change adds support for separate
coreboot_reference, with a fallback to board for configs that don't set
a separate coreboot reference.

BUG=b:172835923
TEST=Ran end-to-end to create a variant for genesis

Change-Id: Ib061430d9770b73165c4bf78b809607f91f25718
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/dev-util/+/2526799
Reviewed-by: Paul Fagerburg <pfagerburg@chromium.org>
Commit-Queue: Matthew Ziegelbaum <ziegs@chromium.org>
Tested-by: Matthew Ziegelbaum <ziegs@chromium.org>