overlay: Fix Keyguard configuration

In 4.4 Keyguard has moved to a separate package
Move its config options to the proper overlay

Change-Id: I0a57874f3ef7702c6407485e98e1d10169baa0ac
Merge "overlay: Fix Keyguard configuration" into cm-11.0
Merge branch 'cm-11.0' of git://github.com/CyanogenMod/android_vendor_cm into cd-4.4