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/Kconfig b/drivers/net/ethernet/Kconfig
index 16c206e..8375b8b 100644
--- a/drivers/net/ethernet/Kconfig
+++ b/drivers/net/ethernet/Kconfig
@@ -31,5 +31,6 @@
 source "drivers/net/ethernet/sfc/Kconfig"
 source "drivers/net/ethernet/smsc/Kconfig"
 source "drivers/net/ethernet/sun/Kconfig"
+source "drivers/net/ethernet/tehuti/Kconfig"
 
 endif # ETHERNET