tehuti: Move the Tehuti driver

Move the Tehuti driver into drivers/net/ethernet/tehuti/ and
make the necessary Kconfig and Makefile changes.

CC: Alexander Indenbaum <baum@tehutinetworks.net>
CC: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
diff --git a/drivers/net/ethernet/Makefile b/drivers/net/ethernet/Makefile
index a52dc26..26324a1 100644
--- a/drivers/net/ethernet/Makefile
+++ b/drivers/net/ethernet/Makefile
@@ -22,3 +22,4 @@
 obj-$(CONFIG_SFC) += sfc/
 obj-$(CONFIG_NET_VENDOR_SMSC) += smsc/
 obj-$(CONFIG_NET_VENDOR_SUN) += sun/
+obj-$(CONFIG_NET_VENDOR_TEHUTI) += tehuti/