get_signed_binary.sh: switch back to grabbing MP-signed images

BUG=b:222000200
TEST=./script/get_signed_binary.sh R101 14579.0.0

Change-Id: If50f8f121a589ccb10055925d7a6d3c86a5045a8
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/hps-firmware-images/+/3525695
Tested-by: Dan Callaghan <dcallagh@chromium.org>
Reviewed-by: David Lattimore <dml@chromium.org>
Commit-Queue: Dan Callaghan <dcallagh@chromium.org>
1 file changed
tree: b5362a9c3a3303a775f9c1afb5b88610d825f066
  1. bin/
  2. firmware-signed/
  3. licenses/
  4. script/
  5. OWNERS
  6. PRESUBMIT.cfg