Bluetooth: log message improvements

Some log improvements:
 - Reduce logspam
 - Use names for states in logs instead of numbers
 - Be more consistent with messages

Also remove some commented out dead code.

Test: run on phone, observe more useful logs
Change-Id: I32163278e148be144c03d4e8aaf0eb761226c94c
2 files changed
tree: f017554d0f389454f9de1c6acf3ec0085dd542a6
  1. framework/
  2. service/