r6040: Move the RDC driver

Move the RDC driver into drivers/net/ethernet/rdc/ and make the
necessary Kconfig and Makefile changes.

CC: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index ae60f8c..ca3ec84c 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5343,7 +5343,7 @@
 M:	Florian Fainelli <florian@openwrt.org>
 L:	netdev@vger.kernel.org
 S:	Maintained
-F:	drivers/net/r6040.c
+F:	drivers/net/ethernet/rdc/r6040.c
 
 RDS - RELIABLE DATAGRAM SOCKETS
 M:	Andy Grover <andy.grover@oracle.com>