DisplaySettings: Improve resolution selection

Signed-off-by: Brandon McAnsh <brandonm@matricom.net>
Display: Reject same display resolutions in Settings

* No longer the APIs responsibility to allow function in WindowManager on boot

Signed-off-by: Brandon McAnsh <brandonm@matricom.net>
Display: Only write the resolution to Secure database if different then current

Signed-off-by: Brandon McAnsh <brandonm@matricom.net>