Move perfprofd to late_start class.

Bug: http://b/19483574
Change-Id: I88649b50b95cbddb7d0671a5499232cbef156c48
diff --git a/rootdir/init.rc b/rootdir/init.rc
index 9fe1b4f..0966038 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -645,10 +645,7 @@
     disabled
     oneshot
 
-on property:ro.debuggable=1
-    start perfprofd
-
 service perfprofd /system/xbin/perfprofd
-    disabled
+    class late_start
     user root
     oneshot