MAINTAINERS: Update mvpp2 driver email

I no longer use mw@semihalf.com email. Update
mvpp2 driver entry with my alternative address.
Signed-off-by: Marcin Wojtas <marcin.s.wojtas@gmail.com>
Link: https://lore.kernel.org/r/20231225225245.1606-1-marcin.s.wojtas@gmail.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

MAINTAINERS

@@ -12814,7 +12814,7 @@ S:	Maintained
 F:	drivers/net/ethernet/marvell/mvneta.*
 
 MARVELL MVPP2 ETHERNET DRIVER
-M:	Marcin Wojtas <mw@semihalf.com>
+M:	Marcin Wojtas <marcin.s.wojtas@gmail.com>
 M:	Russell King <linux@armlinux.org.uk>
 L:	netdev@vger.kernel.org
 S:	Maintained