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