MAINTAINERS: Add entry for Microsemi Ethernet switches

Add myself as a maintainer for the Microsemi Ethernet switches.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

MAINTAINERS

@@ -9279,6 +9279,12 @@ F:	include/linux/cciss*.h
 F:	include/uapi/linux/cciss*.h
 F:	Documentation/scsi/smartpqi.txt
 
+MICROSEMI ETHERNET SWITCH DRIVER
+M:	Alexandre Belloni <alexandre.belloni@bootlin.com>
+L:	netdev@vger.kernel.org
+S:	Supported
+F:	drivers/net/ethernet/mscc/
+
 MICROSOFT SURFACE PRO 3 BUTTON DRIVER
 M:	Chen Yu <yu.c.chen@intel.com>
 L:	platform-driver-x86@vger.kernel.org