sepolicy: Add file context for Widevine DRM

Set context for widevine services
android.hardware.drm-service-widevine
android.hardware.drm-service-lazy.widevine

validation:
xts test case: passes all the xts test case

Change-Id: I568149e2c91f86a72007fb5b04f5597f133eea64
3 files changed
tree: 893300ad7b3465dc51f35919e369b2cfc58eb7a9
  1. generic/
  2. legacy/
  3. qva/
  4. SEPolicy.mk