arm: mvebu: Espressobin: Use DM registered MDIO to configure switch

In order to be able to get rid of the non-DM MDIO bus registered in
mvneta driver, we need to stop using board_network_enable() and instead
use the DM registered MDIO device to configure switch in
last_stage_init().

Signed-off-by: Marek BehĂșn <marek.behun@nic.cz>
Reviewed-by: Stefan Roese <sr@denx.de>
diff --git a/configs/mvebu_espressobin-88f3720_defconfig b/configs/mvebu_espressobin-88f3720_defconfig
index af30f1b..37e4fdc4 100644
--- a/configs/mvebu_espressobin-88f3720_defconfig
+++ b/configs/mvebu_espressobin-88f3720_defconfig
@@ -25,6 +25,7 @@
 CONFIG_ARCH_EARLY_INIT_R=y
 CONFIG_BOARD_EARLY_INIT_F=y
 CONFIG_BOARD_LATE_INIT=y
+CONFIG_LAST_STAGE_INIT=y
 # CONFIG_CMD_FLASH is not set
 CONFIG_CMD_FUSE=y
 CONFIG_CMD_GPIO=y