Settings: ability to turn off SlimPIE (2/2)

due that we have a problem on i9100 because of damn
exynos drivers we give the ability to turn off PIE
for i9100 via overlay for now

cheers

Change-Id: Iacf5f5db5baeaa1083d9bc632670f52582933a6a

Conflicts:
	src/com/android/settings/slim/InterfaceSettings.java