[automerger skipped] codec2: enc stat: add mapper for picture_type_t am: fad78c49 -s ours

am skip reason: Merged-In I855606e2b98b238d571d9b47d36db3f04e92ce06 with SHA-1 7c1a386a is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/18351019



Change-Id: I1bf6759e05051504cf807994a542934a0445781f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>