Revert^2 "audio: voip downlink to stereo" a692a92f6fbd4ab8d28dd1c430b769aebc68382f Change-Id: I312d657be88e5fe4f4c52f649b0e84c3858a0916 (cherry picked from commit 94c8478ae808c9415bc035a3f6cdc58da2541354) Merged-In: I312d657be88e5fe4f4c52f649b0e84c3858a0916