init: Let radio user manipulate service properties

I'm seeing some devices (with broadcom's btld) in which the
radio services (RIL) use the service. namespace to pass or store
data...

Conflicts:

	init/property_service.c

Change-Id: I6e3177689a12b0925064e615408bc1e0f175bcf3

Conflicts:
	init/property_service.c