libultrahdr: correct srgb, p3 calculations and jpeg yuv handling am:...

libultrahdr: correct srgb, p3 calculations and jpeg yuv handling am: 0db53ee3 am: 036e828e am: 0d8c2642 am: 2517af37

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/23431210



Change-Id: I7f8a6e079ca83efe46b4da8b96a3207c3b9e5a42
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>