RootCanal: Remove unused devices

- Move the public address declaration to the device class
- Move the implementation of LE advertising and scanning
  to the Beacon class
- Move the device properties declaration to the
  DualModeController class
- Move the device propertoes class definition to the
  controller/ directory

Test: manual
Change-Id: Ie1056ead6b9658bcad5f8350172df31408e766e2