audio spatializer: more resource usage optimizations am: 11094176 am: bab55176 am: 07f9a958

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/17591403



Change-Id: Ibac5ab7b9f91241290ae601f3be17c2d34c7457f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>