Update sepolicies for stats hal

Bug: 116732452
Test: No sepolicy violations observed with this change
(cherry picked from commit I1958182dd8ecc496625da2a2a834f71f5d43e7bb)

Change-Id: Ib386767d8acfacf9fedafd9a79dd555ce233f41c
diff --git a/private/hwservice_contexts b/private/hwservice_contexts
index f12385f..e7354a7 100644
--- a/private/hwservice_contexts
+++ b/private/hwservice_contexts
@@ -1,6 +1,7 @@
 android.frameworks.displayservice::IDisplayService              u:object_r:fwk_display_hwservice:s0
 android.frameworks.schedulerservice::ISchedulingPolicyService   u:object_r:fwk_scheduler_hwservice:s0
 android.frameworks.sensorservice::ISensorManager                u:object_r:fwk_sensor_hwservice:s0
+android.frameworks.stats::IStats                                u:object_r:fwk_stats_hwservice:s0
 android.hardware.atrace::IAtraceDevice                          u:object_r:hal_atrace_hwservice:s0
 android.hardware.audio.effect::IEffectsFactory                  u:object_r:hal_audio_hwservice:s0
 android.hardware.audio::IDevicesFactory                         u:object_r:hal_audio_hwservice:s0