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

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



Change-Id: I2513f2a05cbb6d063e4e156d3392ee905d9f07d2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>