net: tile: remove ethernet drivers

The tile architecture is obsolete and getting removed. From all
I can tell, later ARM based products use a different ethernet driver,
so we should remove this one as well.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

drivers/net/ethernet/Kconfig

@@ -176,7 +176,6 @@ source "drivers/net/ethernet/stmicro/Kconfig"
 source "drivers/net/ethernet/sun/Kconfig"
 source "drivers/net/ethernet/tehuti/Kconfig"
 source "drivers/net/ethernet/ti/Kconfig"
-source "drivers/net/ethernet/tile/Kconfig"
 source "drivers/net/ethernet/toshiba/Kconfig"
 source "drivers/net/ethernet/tundra/Kconfig"
 source "drivers/net/ethernet/via/Kconfig"