Drop redundant `enum msglevel`

This is the essential backport of the upstream `commit d152fb95e`,
however it lacks the libflashrom bits. For our purposes that doesn't
matter as we are only aiming to converge to the upstreams repo udiff.

BUG=chromium:478356
BRANCH=none
TEST=still builds

Change-Id: I8631755e0605f50430e167dc44b0d9b27f921058
Signed-off-by: Edward O'Callaghan <quasisec@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1484923
Reviewed-by: Stefan Reinauer <reinauer@chromium.org>
7 files changed