Merge "Clarify Secretkeeper comments" into main am: 99cf8471

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2885127



Change-Id: I475d819f43cc892b083c562527b77a63172422d7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>