Merge "C2: Generate CSD in vp9 encoder" into main am: a4f686d469

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/3068149

Change-Id: I7c3d1f9eb98c93c0568758cc125b14c1df29c072
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>