ehea/ibm*: Move the IBM drivers

Move the IBM drivers into drivers/net/ethernet/ibm/ and make the
necessary Kconfig and Makefile changes.

- Renamed ibm_new_emac to emac
- Cleaned up Makefile and Kconfig options which referred to
  IBM_NEW_EMAC to IBM_EMAC
- ibmlana driver is a National Semiconductor SONIC driver so
  it was not moved

CC: Christoph Raisch <raisch@de.ibm.com>
CC: Santiago Leon <santil@linux.vnet.ibm.com>
CC: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: David Gibson <dwg@au1.ibm.com>
CC: Kyle Lucke <klucke@us.ibm.com>
CC: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index bcfc144..2fcfa8b 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2465,7 +2465,7 @@
 M:	Breno Leitao <leitao@linux.vnet.ibm.com>
 L:	netdev@vger.kernel.org
 S:	Maintained
-F:	drivers/net/ehea/
+F:	drivers/net/ethernet/ibm/ehea/
 
 EMBEDDED LINUX
 M:	Paul Gortmaker <paul.gortmaker@windriver.com>
@@ -3163,7 +3163,7 @@
 M:	Santiago Leon <santil@linux.vnet.ibm.com>
 L:	netdev@vger.kernel.org
 S:	Supported
-F:	drivers/net/ibmveth.*
+F:	drivers/net/ethernet/ibm/ibmveth.*
 
 IBM ServeRAID RAID DRIVER
 P:	Jack Hammer