Dynamically showing "driving mode"

* For fix the TreeHugger error in pi-dev, cherry pick the ag/4062037 in
  master and fix TreeHugger "Automatic merge failed" error
* Dynamically showing "driving mode" in "Connection preferences" summary.
  In cl/196700988, when driving mode is available/not available will using Settings.System to set flag.
  Example :
  driving mode is available : Settings.System.putInt(mContentResolver, DRIVING_MODE_SETTINGS_ENABLED, 1)
  driving mode is not available : Settings.System.putInt(mContentResolver, DRIVING_MODE_SETTINGS_ENABLED, 0);

  This CL using Settings.System to get driving mode state that used to dynamically showing "driving mode"

Bug: 79299421
Test: make -j50 RunSettingsRoboTests ROBOTEST_FILTER=AdvancedConnectedDeviceControllerTest
Change-Id: I702fa4fbc752c7b470184cf58f2e604f9f28c057