Update sepolicy for service dexopt_chroot_setup and artd_pre_reboot.

Bug: 311377497
Test: manual - Call
  getDexoptChrootSetupServiceRegisterer().waitForService()
Test: manual - Set up a chroot environment and call
  getArtdPreRebootServiceRegisterer().waitForService()
Change-Id: I50b5f7f858dab37f05174cb9787f64303d50d083
diff --git a/private/artd.te b/private/artd.te
index acab397..f8e79fb 100644
--- a/private/artd.te
+++ b/private/artd.te
@@ -7,6 +7,7 @@
 # Allow artd to publish a binder service and make binder calls.
 binder_use(artd)
 add_service(artd, artd_service)
+add_service(artd, artd_pre_reboot_service)
 allow artd dumpstate:fifo_file { getattr write };
 allow artd dumpstate:fd use;