AdvancedDisplay: implement CM's AdvancedDisplay setup

since the smdk4412 common device repo uses the AdvancedDisplay app. We move it's entry to the Display
Settings menu. We also want to keep the Device Settings entry for the old style
in case other devices still se the DeviceSettings class instead of the new
DisplaySettings class.

PS: cleaned up whitespace

Change-Id: I861c3b659de48b5425134e37b51057ba357cbd84