Convert CONFIG_CMD_BEDBUG to Kconfig

This converts the following to Kconfig:
   CONFIG_CMD_BEDBUG

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/configs/motionpro_defconfig b/configs/motionpro_defconfig
index b770820..70c04c3 100644
--- a/configs/motionpro_defconfig
+++ b/configs/motionpro_defconfig
@@ -14,6 +14,7 @@
 CONFIG_CMD_MII=y
 CONFIG_CMD_PING=y
 CONFIG_CMD_FAT=y
+CONFIG_CMD_BEDBUG=y
 CONFIG_LED_STATUS=y
 CONFIG_LED_STATUS0=y
 CONFIG_LED_STATUS_BIT=0