audiolfinger: implement latency mode control in spatializer mixer am:...

audiolfinger: implement latency mode control in spatializer mixer am: 6f9534fb am: 4295d22b am: cc86cd36

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/2208079



Change-Id: I24230ddbcef6b39798bd0750bed49070156e54db
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>