Allow mediadrmservice to access processinfo

Needed to support session reclaiming

bug: 27916039
Change-Id: I464e6db5b9bc4e83f85cb4623eeca340e1efd603
diff --git a/mediadrmserver.te b/mediadrmserver.te
index 8b4f073..cfa4b28 100644
--- a/mediadrmserver.te
+++ b/mediadrmserver.te
@@ -48,6 +48,7 @@
 
 allow mediadrmserver mediadrmserver_service:service_manager { add find };
 allow mediadrmserver mediaserver_service:service_manager { add find };
+allow mediadrmserver processinfo_service:service_manager find;
 
 # only allow unprivileged socket ioctl commands
 allowxperm mediadrmserver self:{ rawip_socket tcp_socket udp_socket }