Update drm service executables file_contexts

Bug: 139134043
Test: DeviceManifest/SingleManifestTest.InterfacesAreReleased
Test: MediaDrmClearkeyTest
Change-Id: I2cf92120a02459d250eeae5887ec16ff6872040a
Merged-In: I9c027bfc3620a2a9b40ef9d4d14f2c2e10ff8339
1 file changed