configs: add eth dm support for all ColdFire boards

Add dm eth config options for all involved ColdFire-based boards.

Signed-off-by: Angelo Durgehello <angelo.dureghello@timesys.com>
diff --git a/configs/M54418TWR_defconfig b/configs/M54418TWR_defconfig
index 06019ec..4cecb5a 100644
--- a/configs/M54418TWR_defconfig
+++ b/configs/M54418TWR_defconfig
@@ -28,6 +28,8 @@
 CONFIG_SYS_RELOC_GD_ENV_ADDR=y
 CONFIG_SPI_FLASH=y
 CONFIG_SPI_FLASH_ATMEL=y
+CONFIG_DM_ETH=y
+CONFIG_MCFFEC=y
 CONFIG_MII=y
 CONFIG_SPI=y
 CONFIG_DM_SPI=y