libultrahdr: correct srgb, p3 calculations and jpeg yuv handling am: 0db53ee3c9

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

Change-Id: If8fb6388095f628f36dce7a728715c9d384667f9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>