Fix permissions problems of incidentd.

Test: manual
Change-Id: I4ee0d1f2349ee1a25a422cabf1b5b87c612710d2
diff --git a/cmds/incidentd/incidentd.rc b/cmds/incidentd/incidentd.rc
index 66667dc..1bd1468 100644
--- a/cmds/incidentd/incidentd.rc
+++ b/cmds/incidentd/incidentd.rc
@@ -19,4 +19,4 @@
 
 on post-fs-data
     # Create directory for incidentd
-    mkdir /data/misc/incidents 0770 root root
+    mkdir /data/misc/incidents 0770 incidentd incidentd