To prevent property name collisions between properties of system and
vendor, 'vendor.' prefix must be added to a vendor HAL service name.
You can see the details in http://go/treble-sysprop-compatibility.
Test: succeeded building and tested on a walleye device
Bug: 36796459
Change-Id: I6199c7c4f7f978637443f73ec5428805a9ae658c