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: I4b1240d3219c52a1b0ddf472521c7815eab31fdd
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>