Merge changes Idaccf6a7,I301b1621,I4c9430a0,I98a0c85e,I42b5a9d5, ...

* changes:
  HID Host: always require encryption & authentication
  BNEP: Use L2cap for security enforcement
  PAN_SetRole: sec_mask shouldn't be nullptr if not disabling it
  PAN_SetRole: return early if we disable PAN
  PAN: flatten sec_mask code
  PAN: Remove some unused parameter for GN