Enable world-readable selinuxfs policy binary.

Change-Id: I1eefb457cea1164a8aa9eeb7683b3d99ee56ca99
diff --git a/rootdir/init.rc b/rootdir/init.rc
index a07790a..dfb98f0 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -177,6 +177,9 @@
     chown system log /proc/last_kmsg
     chmod 0440 /proc/last_kmsg
 
+    # make the selinux kernel policy world-readable
+    chmod 0444 /sys/fs/selinux/policy
+
     # create the lost+found directories, so as to enforce our permissions
     mkdir /cache/lost+found 0770 root root