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

libultrahdr: correct srgb, p3 calculations and jpeg yuv handling am: 0db53ee3 am: 5ad0df9b am: 0b29f050

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



Change-Id: I75334a282843a7327be225d9f876eab87d8b561c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>