board/T104xrdb: T1040 FMAN ports FM1@DTSEC1 and FM1@DTSEC2 have no PHYs

Freescale's T1040qds board may be configured to have up to
5 FMAN ports (FM1@DTSEC1 to FM1@DTSEC5). From these 5 ports,
2 of them may be fixed-links (FM1@DTSEC1 annd FM1@DTSEC2),
connected to other two ports from an intergrated
VSC9953 L2 Switch (switch ports 8 and 9). These fixed-link
ports have no PHYs attatched, so they don't have a
corresponding MDIO.

Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>

board/freescale/t104xrdb/eth.c

@@ -72,8 +72,13 @@ int board_eth_init(bd_t *bis)
 			fm_info_set_phy_address(i, 0);
 			break;
 		}
-		fm_info_set_mdio(i,
-				 miiphy_get_dev_by_name(DEFAULT_FM_MDIO_NAME));
+		if (fm_info_get_enet_if(i) == PHY_INTERFACE_MODE_QSGMII ||
+		    fm_info_get_enet_if(i) == PHY_INTERFACE_MODE_NONE)
+			fm_info_set_mdio(i, NULL);
+		else
+			fm_info_set_mdio(i,
+					 miiphy_get_dev_by_name(
+							DEFAULT_FM_MDIO_NAME));
 	}
 
 	cpu_eth_init(bis);