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

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

Change-Id: I30da3e6f12024b5ea6f12c4d926beb07e38dbb1c