Add audio_policy_configuration

This module is for API check of java file generated from
audio_policy_configuration.xsd.
audio_policy_configuration.docs is added to required in
impl library because API check whenever building impl
library.

Bug: 80453829
Test: m -j && make update-api && make check-api

Change-Id: I49499ec244c390ed1e6e9e8ca77d08d7da69ac59