image_signing: ensure_secure_kernelparams.sh: use loopback devices for speed
Rather than read out the whole kernel partition just to dump the kernel
config, set the image up via a loopback device and read from there.
BRANCH=None
BUG=chromium:714598
TEST=signing images still works
Change-Id: I3797a0e77315e8baf6f481f31c44b889ac6d098a
Reviewed-on: https://chromium-review.googlesource.com/505475
Commit-Ready: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
2 files changed
