board: freescale: powerpc: add support for all RGMII modes

Make sure all RGMII internal delay modes are covered.

Signed-off-by: Madalin Bucur <madalin.bucur@oss.nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
diff --git a/board/freescale/t208xrdb/eth_t208xrdb.c b/board/freescale/t208xrdb/eth_t208xrdb.c
index c165388..e77f3f7 100644
--- a/board/freescale/t208xrdb/eth_t208xrdb.c
+++ b/board/freescale/t208xrdb/eth_t208xrdb.c
@@ -76,6 +76,9 @@
 		interface = fm_info_get_enet_if(i);
 		switch (interface) {
 		case PHY_INTERFACE_MODE_RGMII:
+		case PHY_INTERFACE_MODE_RGMII_TXID:
+		case PHY_INTERFACE_MODE_RGMII_RXID:
+		case PHY_INTERFACE_MODE_RGMII_ID:
 			dev = miiphy_get_dev_by_name(DEFAULT_FM_MDIO_NAME);
 			fm_info_set_mdio(i, dev);
 			break;