RGMII-ID just defines transmitter internal delays. Otherwise it is the
same as RGMII. As the differences only influence the behaviour of the
phy, the fec driver should handle it the same way as RGMII.
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>