Treble-ize sepolicy for fwk HIDL services.

Bug: 130734497
Test: m selinux_policy; system_server and statds still have permission
to export HIDL services.
Change-Id: I6e87b236bdbdd939fca51fb7255e97635118ed2d
diff --git a/private/system_server.te b/private/system_server.te
index ce6808c..d55178f 100644
--- a/private/system_server.te
+++ b/private/system_server.te
@@ -5,6 +5,8 @@
 
 typeattribute system_server coredomain;
 typeattribute system_server mlstrustedsubject;
+typeattribute system_server scheduler_service_server;
+typeattribute system_server sensor_service_server;
 
 # Define a type for tmpfs-backed ashmem regions.
 tmpfs_domain(system_server)
@@ -244,10 +246,6 @@
 allow system_server hal_renderscript_hwservice:hwservice_manager find;
 allow system_server same_process_hal_file:file { execute read open getattr map };
 
-# Offer HwBinder services
-add_hwservice(system_server, fwk_scheduler_hwservice)
-add_hwservice(system_server, fwk_sensor_hwservice)
-
 # Talk to tombstoned to get ANR traces.
 unix_socket_connect(system_server, tombstoned_intercept, tombstoned)