Incorrect summary for the carkit device

-"Problem connecting. Turn the device off & back on" message shows in the BT setting when DUT pair with carkit and SAP connection is established.
-HFP and SAP can not be connected at the same time.

Bug: 182740717
Test: make -j50 RunSettingsLibRoboTests ROBOTEST_FILTER=CachedBluetoothDeviceTest
Change-Id: Ieadbe137c3098c25d527e0db4b7df9267bfde9f7