The LCDK embeds a LAN8710.

Cc: Sekhar Nori <nsekhar@ti.com>
Cc: Kevin Hilman <khilman@baylibre.com>
Acked-by: NKevin Hilman <khilman@baylibre.com>
Tested-by: NKevin Hilman <khilman@baylibre.com>
Signed-off-by: NKarl Beldan <kbeldan@baylibre.com>
Signed-off-by: NSekhar Nori <nsekhar@ti.com>