Migrate disk directory from /data/system/ to /data/misc/

Test: statsd, statsd_test
Change-Id: I6d2fe97afd79fb9b36d180d5e6e6a7a166a228b7
diff --git a/cmds/statsd/src/StatsService.cpp b/cmds/statsd/src/StatsService.cpp
index dc12efb..d8f0fac 100644
--- a/cmds/statsd/src/StatsService.cpp
+++ b/cmds/statsd/src/StatsService.cpp
@@ -46,7 +46,7 @@
 namespace statsd {
 
 constexpr const char* kPermissionDump = "android.permission.DUMP";
-#define STATS_SERVICE_DIR "/data/system/stats-service"
+#define STATS_SERVICE_DIR "/data/misc/stats-service"
 
 // ======================================================================
 /**