Merge "media: release mediaplayerservice lock while dumping services" into tm-dev am: 1bb520ee

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/18444545



Change-Id: I38e2a3d597dcf04325f958e1415198b9811a661f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>