Merge "audio HAL: new track metadata version" am: 29ae34bcde am: cdfe32fd8a

Original change: https://android-review.googlesource.com/c/platform/hardware/libhardware/+/1540995

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I30052378a978c2aa47c0a43778f20b01cda566e5