configs: T2080RDB: enable DM_ETH

Enable DM_ETH and DM_MDIO for the T2080RDB.

Signed-off-by: Camelia Groza <camelia.groza@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
diff --git a/configs/T2080RDB_NAND_defconfig b/configs/T2080RDB_NAND_defconfig
index 543d34e..3bb7433 100644
--- a/configs/T2080RDB_NAND_defconfig
+++ b/configs/T2080RDB_NAND_defconfig
@@ -33,6 +33,7 @@
 CONFIG_CMD_IMLS=y
 CONFIG_CMD_MEMTEST=y
 CONFIG_SYS_ALT_MEMTEST=y
+CONFIG_CMD_DM=y
 CONFIG_CMD_I2C=y
 CONFIG_CMD_MMC=y
 CONFIG_CMD_USB=y
@@ -70,6 +71,8 @@
 CONFIG_PHY_CORTINA=y
 CONFIG_SYS_CORTINA_FW_IN_NAND=y
 CONFIG_PHY_REALTEK=y
+CONFIG_DM_ETH=y
+CONFIG_DM_MDIO=y
 CONFIG_E1000=y
 CONFIG_FMAN_ENET=y
 CONFIG_MII=y