[MAINTAINERS] Update email and move to DCO

	* MAINTAINERS: Update my email address.

Signed-off-by: Matthew Malcomson <mmalcomson@nvidia.com>

MAINTAINERS

@@ -636,7 +636,7 @@ Luis Machado                    luisgpm         <luisgpm@br.ibm.com>
 Ziga Mahkovec                   ziga            <ziga.mahkovec@klika.si>
 Vladimir Makarov                vmakarov        <vmakarov@redhat.com>
 David Malcolm                   dmalcolm        <dmalcolm@redhat.com>
-Matthew Malcomson               matmal01        <matthew.malcomson@arm.com>
+Matthew Malcomson               matmal01        <mmalcomson@nvidia.com>
 Mikhail Maltsev                 miyuki          <maltsevm@gmail.com>
 Jose E. Marchesi                jemarch         <jose.marchesi@oracle.com>
 Stamatis Markianos-Wright       stammark        <stam.markianos-wright@arm.com>
@@ -922,6 +922,7 @@ Jeff Law                                        <jeffreyalaw@gmail.com>
 Jeff Law                                        <jlaw@tachyum.com>
 Jeff Law                                        <jlaw@ventanamicro.com>
 H.J. Lu                                         <hjl.tools@gmail.com>
+Matthew Malcomson                               <mmalcomson@nvidia.com>
 Immad Mir                                       <mir@sourceware.org>
 Gaius Mulley                                    <gaiusmod2@gmail.com>
 Andrew Pinski                                   <quic_apinski@quicinc.com>