tile: Move the Tilera driver

Move the Tilera driver into drivers/net/ethernet/tile and
make the necessary Kconfig and Makefile changes.

Updated the Kconfig so that the options defualt to y if TILE kernel.

CC: Chris Metcalf <cmetcalf@tilera.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index dfa4269..3d8a6a6 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -6411,7 +6411,7 @@
 S:	Supported
 F:	arch/tile/
 F:	drivers/tty/hvc/hvc_tile.c
-F:	drivers/net/tile/
+F:	drivers/net/ethernet/tile/
 F:	drivers/edac/tile_edac.c
 
 TLAN NETWORK DRIVER