[automerger skipped] identity: Fix attestation and documentation problems. am:...

[automerger skipped] identity: Fix attestation and documentation problems. am: e4f58f89 -s ours am: e8725fd5 -s ours

am skip reason: Change-Id I2f8bd772de078556733f769cec2021918d1d7de6 with SHA-1 34abaaef is in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/interfaces/+/13036974

Change-Id: Id8b34cf1f591d3341052247405ec8e856354fc39