Enable debug logs for Bluetooth AdapterService

Enabled log messages that are useful to debug the AdapterService state.
Remaining log messages are controlled by AdapterService.VERBOSE flag
and are disabled by default.

Bug: 31442739
Test: manual, and "frameworks/base/core/tests/bluetoothtests" unit tests
Change-Id: I7d81fd605f64e64f29aee37314821384234b286d
(cherry picked from commit 32a92489e9779d10c613a57d86135a7de6d3d7c4)