MAINTAINERS: Update MELLANOX MLX5 core VPI driver maintainers

Add myself as a maintainer for mlx5 core driver as well.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/MAINTAINERS b/MAINTAINERS
index 4012c2f..53964ad 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -8053,6 +8053,7 @@
 F:	include/linux/mlx4/
 
 MELLANOX MLX5 core VPI driver
+M:	Saeed Mahameed <saeedm@mellanox.com>
 M:	Matan Barak <matanb@mellanox.com>
 M:	Leon Romanovsky <leonro@mellanox.com>
 L:	netdev@vger.kernel.org