Allow gatekeeper to find hardwareproperties service.

Bug: 26945055
Change-Id: I5745d02be9889f6a0e02de12bd8d8f2808de9ce0
diff --git a/service_contexts b/service_contexts
index 39e004c..1d18a60 100644
--- a/service_contexts
+++ b/service_contexts
@@ -44,6 +44,7 @@
 gfxinfo                                   u:object_r:gfxinfo_service:s0
 graphicsstats                             u:object_r:graphicsstats_service:s0
 hardware                                  u:object_r:hardware_service:s0
+hardwareproperties                        u:object_r:hardwareproperties_service:s0
 hdmi_control                              u:object_r:hdmi_control_service:s0
 inputflinger                              u:object_r:inputflinger_service:s0
 input_method                              u:object_r:input_method_service:s0