RFCOMM: Add more logging on failure cases
* Log every instance of RFCOMM unexpected disconnection
* Log every time when RFCOMM channel (DLCI) is changed
* Refactor some RFCOMM code to be more readable and easier for logging
* Remove excessive logging in power manager
* Assign HSP default version more appropriate location
* Replace some usage of NULL with nullptr
Bug:
77224743
Test: make, no functional changes
Change-Id: I5e62dd6d338f7e92a8b8d39c1fe155b71396034c
(cherry picked from commit
4e01c6d5f2d03fb5c98567b573a9dd32d28a4106)
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