Settings: Lock before unlock the new way (2/2)

for more information see fb commit please.
target selection if lock before unlock is activated
will be enabled and shows the repective settings dependend
on if it is a phone or tablet

Change-Id: I6bb41539383c2b02b62354b00c773505f396028e
Merge branch 'kitkat' of github.com:X-ROM/android_packages_apps_Settings into kitkat