audio: Propagate errors from Driver::setConnectedDevices am: 75b59dfb am: c135ebc1

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2639435



Change-Id: I1617a9b47874ce79d3b8b10e96086736194377a1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>