MAINTAINERS: Update maintainer of Amazon EFA driver

Change EFA driver maintainer from Gal Pressman to myself. Keep Gal as a
reviewer at his request.

Link: https://lore.kernel.org/r/20230525094444.12570-1-mrgolin@amazon.com
Signed-off-by: Michael Margolin <mrgolin@amazon.com>
Acked-by: Gal Pressman <gal.pressman@linux.dev>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

Author: mrgolin

MAINTAINERS

@@ -956,7 +956,8 @@ F:	Documentation/networking/device_drivers/ethernet/amazon/ena.rst
 F:	drivers/net/ethernet/amazon/
 
 AMAZON RDMA EFA DRIVER
-M:	Gal Pressman <galpress@amazon.com>
+M:	Michael Margolin <mrgolin@amazon.com>
+R:	Gal Pressman <gal.pressman@linux.dev>
 R:	Yossi Leybovich <sleybo@amazon.com>
 L:	linux-rdma@vger.kernel.org
 S:	Supported