Allow find access to drmserver_service from nfc and

 platform_app.

Address the following denials:
SELinux : avc:  denied  { find } for service=drm.drmManager scontext=u:r:nfc:s0 tcontext=u:object_r:drmserver_service:s0 tclass=service_manage
SELinux : avc:  denied  { find } for service=drm.drmManager scontext=u:r:platform_app:s0:c512,c768 tcontext=u:object_r:drmserver_service:s0 tclass=service_manager

Bug: 18831075
Change-Id: I2c162f58f4adae9f6c544f9d9c6a9300877b4f36