Merge "libeffects: Reverb Testbench" am: 246b31dc76 am: 49b8da0ed5 am: 693f515a9e am: 7dd78282f0

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/1402347

Change-Id: Ie87c488b75c4142b15b830cf7803d84bb359b240