Merge "r_submix: keep the signed value for offset calculation in AIDL implementation" into main am: bc2537e41f

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2721915

Change-Id: I87fe0b61d221921fdc3c69a30a982037e82b771f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>