Merge "KeyMint: add separator for debugging output" into main am: ea20772c42

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2980595

Change-Id: Ie7128c22238b2189b9d5d5fdd89d6a2c44855a90
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>