Audio V4: More fixes of the audio 2.0 API

Remove unnecessary Result typedef.
Make bufferSizeFrames and burstSizeFrames unsigned
as they should not be negative.
Remove legacy AudioInterleave.
Remove implicit callflow annotation.
Make EffectConfigParameters a bitfield.

Bug: 38184704
Test: hardware/interfaces/update-makefiles.py
Change-Id: I33e6f7869d20ca0cad4123f32347754e5a514caa
Signed-off-by: Kevin Rocard <krocard@google.com>