Merge "Plumb display brightness nits to composer hal." into tm-dev am: d7814346 am: e523c8d5

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/17354440



Change-Id: I1ba3ebcb11bf860e05006e819e34926b6280e8a9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>