Merge "audio: Fix handling of relative XML include paths in VTS" into sc-dev am: 3456ce6816 am: 384e1758ac

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/interfaces/+/15193448

Change-Id: Ibbd514653d7b23ea86e49d330c3199b49079a2aa