init.rc: Add cpuacct to cgroup mount for cpu statistics

Change-Id: Ic1893e1bf7b2c45659419b0bc55d42f50d030c9f
Signed-off-by: Mike Chan <mike@android.com>
diff --git a/rootdir/init.rc b/rootdir/init.rc
index 7b7d7ba..97a3b38 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -58,7 +58,9 @@
 
 # Create cgroup mount points for process groups
     mkdir /dev/cpuctl
-    mount cgroup none /dev/cpuctl cpu
+    mount cgroup none /dev/cpuctl cpu,cpuacct
+    mkdir /dev/cpuctl/uid
+    chmod 0775 /dev/cpuctl/uid
     chown system system /dev/cpuctl
     chown system system /dev/cpuctl/tasks
     chmod 0777 /dev/cpuctl/tasks