Add Serge E. Hallyn <serge@hallyn.com> as a co-maintainer of the
security subsystem, to avoid having a single point of failure
in the development process.
Signed-off-by: James Morris <james.l.morris@oracle.com>
 
 SECURITY SUBSYSTEM
 M:     James Morris <james.l.morris@oracle.com>
+M:     Serge E. Hallyn <serge@hallyn.com>
 L:     linux-security-module@vger.kernel.org (suggested Cc:)
 T:     git git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security.git
 W:     http://kernsec.org/