Merge "codec2: enc stat: add mapper for picture_type_t" am: f2f591ed

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/2095563



Change-Id: I03774306362d73e4c6bfddc653a6800cf683f592
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>