Allow SELinuxPolicyInstallReceiver to work.

Change-Id: I10006f43c142f07168e2ea0f4f5f7af68d03e504
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>

system_server.te

@@ -217,3 +217,6 @@ allow system_server sysfs_wake_lock:file rw_file_perms;
 r_dir_file(system_server, fscklogs)
 allow system_server fscklogs:dir { write remove_name };
 allow system_server fscklogs:file unlink;
+
+# For SELinuxPolicyInstallReceiver
+selinux_manage_policy(system_server)