tsi108*: Move the Tundra driver

Move the Tundra driver to drivers/net/ethernet/tundra/ and
make the necessary Kocnfig and Makefile changes.

CC: Kong Lai <kong.lai@tundra.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
diff --git a/drivers/net/ethernet/Kconfig b/drivers/net/ethernet/Kconfig
index 3893065..8f404ea 100644
--- a/drivers/net/ethernet/Kconfig
+++ b/drivers/net/ethernet/Kconfig
@@ -52,6 +52,7 @@
 source "drivers/net/ethernet/sun/Kconfig"
 source "drivers/net/ethernet/tehuti/Kconfig"
 source "drivers/net/ethernet/toshiba/Kconfig"
+source "drivers/net/ethernet/tundra/Kconfig"
 source "drivers/net/ethernet/via/Kconfig"
 
 endif # ETHERNET