Merge "codec2: C2AllocatorIon/DmaBuf: add support for padding" am: 5b1d365b9b am: d46b511dc6 am: bcc9fcaf75

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/1645834

Change-Id: Ib5ecaeb297d37d1ebbd9abbe89237e0158c8bf6f