PowerLog: Add dump prefix to powerlog

Test: dumpsys media.audio_flinger
Bug: 30572472
Change-Id: I81ff273cf7901bcdb4b252781a02b65cf27b6832
(cherry picked from commit 627acb6b8ac6da6c0f1bab950e5b15c8ad44f61e)
1 file changed
tree: f0b0bd2c758d03fbf3b7a346231ed34e6f174ffb
  1. hal/
  2. legacy/
  3. post_proc/
  4. visualizer/
  5. voice_processing/
  6. Android.mk