Merge "audio: save vndbinder threads" am: 26ebfab53f am: 79262a2456 am: 4605ca76b3

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2434045

Change-Id: Ie62015ee6e21321daac7ac97f4418c84d48c52ca
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>