ARM: at91: ma5d4: Enable random ethaddr

Use random ethaddr by default in case no ethaddr is set.

Signed-off-by: Marek Vasut <marex@denx.de>
diff --git a/configs/ma5d4evk_defconfig b/configs/ma5d4evk_defconfig
index bb2a887..6688160 100644
--- a/configs/ma5d4evk_defconfig
+++ b/configs/ma5d4evk_defconfig
@@ -15,6 +15,7 @@
 CONFIG_BOARD_EARLY_INIT_F=y
 CONFIG_SPL=y
 CONFIG_HUSH_PARSER=y
+CONFIG_NET_RANDOM_ETHADDR=y
 CONFIG_CMD_BOOTZ=y
 # CONFIG_CMD_IMI is not set
 # CONFIG_CMD_IMLS is not set