arm: mvebu: clearfog: enable bubt command

With support added for Armada 38x, include the bubt command in
ClearFog defconfig.

Signed-off-by: Joel Johnson <mrjoel@lixil.net>
Reviewed-by: Stefan Roese <sr@denx.de>
diff --git a/configs/clearfog_defconfig b/configs/clearfog_defconfig
index ada35cb..1566a4f 100644
--- a/configs/clearfog_defconfig
+++ b/configs/clearfog_defconfig
@@ -31,6 +31,7 @@
 CONFIG_CMD_GPIO=y
 CONFIG_CMD_I2C=y
 CONFIG_CMD_MMC=y
+CONFIG_CMD_MVEBU_BUBT=y
 CONFIG_CMD_PCI=y
 CONFIG_CMD_SPI=y
 CONFIG_CMD_USB=y