Widevine persistent data is stored in /data/mediadrm, HALs
are not allowed to access files in /data. Move persistent
data to /data/vendor/mediadrm/widevine for older devices,
and persistent data will not be saved under /data/vendor.
Test: Play Movies & Tv, Netflix
bug: 36601695
Change-Id: I31fdd43b7db327bf6d8343dc95e9883ae6bce70d
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