Merge "libhwc2.1: Add HistogramController class" into udc-qpr-dev am: 3daf07da7f am: 97711d77e8

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/google/graphics/gs201/+/23669445

Change-Id: Ia84c1ab0bc820b6788972bee0c87fdfabc978f01
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>