Spatializer: Added benchmark for Spatializer

Bug: 230412545
Test: Push libspatialaudio.so to /data/local/tmp and then
 adb shell LD_LIBRARY_PATH=/data/local/tmp \
 /data/local/tmp/spatializer_benchmark

Change-Id: Ibfc57c8260ef20fe665f16129604302ca71c38d8
2 files changed