image_signing: work around shar invocation changing
The shar utility changed the flag name and newer versions no longer
accept -w. Mung the shellball on the fly to use the newer flag.
BUG=chrome-os-partner:33719
TEST=signing old firmware shellball inside chroot passes
BRANCH=none
Change-Id: If5c2da3062bd72062baa779bb26ea56304c31558
Reviewed-on: https://chromium-review.googlesource.com/241064
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
1 file changed