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

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



Change-Id: I6cabd5e1935cb1f0286b32f6671a626b50843c6c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>