Merge "Clarify measurement interval documentation" into tm-dev am: 58178fd1b7 am: d2c7c79d17 am: 3b0ed8c408 am: 2c3def9471

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/interfaces/+/17988968

Change-Id: Ie3dd103bbd262d3014e3f05c8128b1560f2ba54c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>