MAINTAINERS: update information for sfc network driver

Based upon a patch by Ben Hutchings.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

MAINTAINERS

@@ -4527,9 +4527,10 @@ S:	Supported
 F:	drivers/net/benet/
 
 SFC NETWORK DRIVER
-P:	Steve Hodgson
-P:	Ben Hutchings
-M:	Robert Stonehouse <linux-net-drivers@solarflare.com>
+M:	Solarflare linux maintainers <linux-net-drivers@solarflare.com>
+M:	Steve Hodgson <shodgson@solarflare.com>
+M:	Ben Hutchings <bhutchings@solarflare.com>
+L:	netdev@vger.kernel.org
 S:	Supported
 F:	drivers/net/sfc/