MAINTAINERS: net: macb: add Claudiu as co-maintainer

I would like that Claudiu becomes co-maintainer of the Cadence macb
driver. He's already participating to lots of reviews and enhancements
to this driver and knows the different versions of this controller.

Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/MAINTAINERS b/MAINTAINERS
index 63c4cc4..5f14938 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2929,6 +2929,7 @@
 
 ATMEL MACB ETHERNET DRIVER
 M:	Nicolas Ferre <nicolas.ferre@microchip.com>
+M:	Claudiu Beznea <claudiu.beznea@microchip.com>
 S:	Supported
 F:	drivers/net/ethernet/cadence/