arm: juno: Enable DM_ETH

The smc911X driver is now DM enabled, so we can switch the Juno board
over to use DM_ETH for the on-board Fast Ethernet device.
Works out of the box by using the DT.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/board/armltd/vexpress64/vexpress64.c b/board/armltd/vexpress64/vexpress64.c
index fbfa7a1..5932a4a 100644
--- a/board/armltd/vexpress64/vexpress64.c
+++ b/board/armltd/vexpress64/vexpress64.c
@@ -152,11 +152,13 @@
 int board_eth_init(bd_t *bis)
 {
 	int rc = 0;
+#ifndef CONFIG_DM_ETH
 #ifdef CONFIG_SMC91111
 	rc = smc91111_initialize(0, CONFIG_SMC91111_BASE);
 #endif
 #ifdef CONFIG_SMC911X
 	rc = smc911x_initialize(0, CONFIG_SMC911X_BASE);
 #endif
+#endif
 	return rc;
 }