Added log in DPMService.setUserRestriction

Bug: 285656428
Test: manually verified the logger statment in logcat.
Change-Id: I16419b7f52e03bd81d4ca66aad1803afb6b646b6

services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerService.java

@@ -13593,6 +13593,9 @@ public class DevicePolicyManagerService extends IDevicePolicyManager.Stub {
                     : SecurityLog.TAG_USER_RESTRICTION_REMOVED;
             SecurityLog.writeEvent(eventTag, caller.getPackageName(), caller.getUserId(), key);
         }
+
+        Slogf.i(LOG_TAG, "Changing user restriction %s to: %b caller: %s",
+                key, enabled, caller.toString());
     }
 
     private void saveUserRestrictionsLocked(int userId) {