audio: Facilitate extension of Module class by vendors am: 57f0dcf78d am: 9e3b3d013a

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2639432

Change-Id: I04fbe2835af750a76fede17bc3d858c4286a19a1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>