Merge "Camera: Clarify benefit of readout vs exposure timestamp" into tm-d1-dev am: 26f67348

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18218749



Change-Id: Ic689859c3682a30248579af660f6a9b3c11c49cc
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>