enic: Move the Cisco driver

Move the Cisco driver into drivers/net/ethernet/cisco/ and make the
necessary Kconfig and Makefile changes.

CC: Christian Benvenuti <benve@cisco.com>
CC: Vasanthy Kolluri <vkolluri@cisco.com>
CC: Roopa Prabhu <roprabhu@cisco.com>
CC: David Wang <dwang2@cisco.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index 2fcfa8b..c54e736 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1761,7 +1761,7 @@
 M:	Roopa Prabhu <roprabhu@cisco.com>
 M:	David Wang <dwang2@cisco.com>
 S:	Supported
-F:	drivers/net/enic/
+F:	drivers/net/ethernet/cisco/enic/
 
 CIRRUS LOGIC EP93XX ETHERNET DRIVER
 M:	Hartley Sweeten <hsweeten@visionengravers.com>