Merge "C2SoftAvcEnc: configure bitrate mode for Avc encoder" into main am: 614381a1ad am: d51df234e2

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/2906162

Change-Id: I9270ad6392b99ac914088a323e446925f932b079
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>