ProximityWake : Add support for checking proximity when waking device [1/2]

Change-Id: Ia5ff446d88435773acccc7467e66009000dc20cb

Conflicts:
	core/java/android/os/IPowerManager.aidl
	core/java/android/provider/Settings.java
	services/java/com/android/server/power/PowerManagerService.java

Conflicts:
	core/java/android/os/IPowerManager.aidl
	core/java/android/provider/Settings.java