atrace: allow tracing of vibrator hal

Test: On-Device Systrace
Change-Id: I4172c83cf50106d28eb7b9330c5bb559fabc504b
Signed-off-by: Harpreet "Eli" Sangha <eliptus@google.com>
diff --git a/private/atrace.te b/private/atrace.te
index 75be787..2545c8b 100644
--- a/private/atrace.te
+++ b/private/atrace.te
@@ -55,6 +55,7 @@
   allow atrace hwservicemanager:hwservice_manager list;
   # Notify the camera HAL.
   hal_client_domain(atrace, hal_camera)
+  hal_client_domain(atrace, hal_vibrator)
 ')
 
 # Remove logspam from notification attempts to non-whitelisted services.