Merge "CCodec: split preparation and request of initial input buffers" into tm-dev am: 8fed6de7

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/18530392



Change-Id: Ib10796f59662bde236b758e20621b38440c3abc6
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>