Limit the retry attemps on restarting Bluetooth

* Back off the delay time of resarting Bluetooth when
  there's continous turn on failures.
* Stop to restart Bluetooth if we are seeing back to
  back Bluetooth crashes, so we won't see endless
  diaglogs popping out.

Bug: 144572641
Test: Manual
Change-Id: Ifeffa214256eab61901c123fc88b037fc6d7dd50