Limit access to head tracker sensor

Lock down access to only internal system usage and CTS due to privacy
considerations.

Bug: 224619073
Test: run SensorHeadTrackerTest with and without "cmd unrestrict-ht"
Change-Id: I0bd37472e058c550de8d0098caa0bd439d8f12a5
diff --git a/services/sensorservice/SensorDirectConnection.cpp b/services/sensorservice/SensorDirectConnection.cpp
index fae16f6..2dd12e9 100644
--- a/services/sensorservice/SensorDirectConnection.cpp
+++ b/services/sensorservice/SensorDirectConnection.cpp
@@ -157,7 +157,7 @@
     }
 
     const Sensor& s = si->getSensor();
-    if (!SensorService::canAccessSensor(s, "config direct channel", mOpPackageName)) {
+    if (!mService->canAccessSensor(s, "config direct channel", mOpPackageName)) {
         return PERMISSION_DENIED;
     }