SoundPool: Do not sleep on stop for USAGE_GAME or on BUFFER_END

Test: SoundPoolApplication, SoundPoolOggTest, Games
Bug: 139787914
Bug: 139788416
Bug: 140579743
Bug: 140779732
Change-Id: I83b9b1d61b65dcc4a73d676e1f8be1e022c70302
1 file changed