[automerger skipped] Move engine loading out from the AudioPolicyManager am: f1b6d973 -s ours

am skip reason: Merged-In I5185d8e27fccf64ba14856d3a1f0ea07a47f02e0 with SHA-1 abb04782 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/22994664



Change-Id: Ibceccefdd4a407a29b5aae377babf47fe813e204
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>