Keep AOSP sepolicy up to date with internal master

This re-alignes aosp and internal master to avoid
conflicts when uploading CLs upstream.

Bug: 170126760
Change-Id: I9c087e70998cd529b71dec7428641c4bfef10d31
diff --git a/private/service_contexts b/private/service_contexts
index be4aa2b..bbed660 100644
--- a/private/service_contexts
+++ b/private/service_contexts
@@ -175,6 +175,7 @@
 phone2                                    u:object_r:radio_service:s0
 phone                                     u:object_r:radio_service:s0
 pinner                                    u:object_r:pinner_service:s0
+power_stats                               u:object_r:power_stats_service:s0
 power                                     u:object_r:power_service:s0
 print                                     u:object_r:print_service:s0
 processinfo                               u:object_r:processinfo_service:s0