audio: Add AUDIO_FORMAT_DEFAULT to supported formats (V6) am: 50bf1116fc

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2989191

Change-Id: Ifa60f56a93ed09f1a546989cd8231cb0df97ad4a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>