Merge "ID attestation: update docs for a second IMEI" am: 2f2544e410 am: 1fe35dfb9a am: 72f4dc2873

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2309483

Change-Id: I13ac85769b93f7eb00dbbae655b85e7fec4a9c13
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>