Remove dependency on android.media.audio.common.AudioFormat

In a preparation to converting audio HAL to SAIDL,
ensure that Framework SAIDL is self-contained and
has all the necessary types.

This creates a temporary duplication of types with
android.media.audio.common which will be fixed once
we stabilize the common types between the framework
and HALs.

Bug: 188932434
Test: m
Change-Id: Ib632c0ae5d2d1562266c87480b585b1b7f6e5ac6