matrices: automotive.audiocontrol in 7.xml has max version am: 966a4f13a5 am: 980a0781a7 am: 5902a1fa71 am: 703091afe7

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2688072

Change-Id: I3c50c679129ce7b18d55cb0bb530e5166d8dca9e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>