Take the test build entirely out of the image creation process. This
also allows splitting up the build steps a bit, providing more break
points in case some build/test fails.
Change-Id: Ie05d4a09f79350fd3e5415430da1edbcb3bcb443
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49985
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>