Audio HAL: A speech volume outside of [0,1] is an error

Hals are supposed to received normalized volumes, between 0 and 1.
Previously volumes outside [0,1] were clamp to this range.
This clamping has the capability to hide bugs thus return an error if
such volume is received.

Test: vts-tradefed run vts --module VtsHalAudioV2_0Target
Test: call/play music/record/video...
Bug: 36311550
Change-Id: Iab70f9c651540ea2434d10939d28c1c842db19e0
Signed-off-by: Kevin Rocard <krocard@google.com>