dumpsys: Add logging bookends for dumpsys am: 04671064

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/3106394



Change-Id: Ic5ba7eaaa72133173373fb998cba2b2d6a616088
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>