sandbox: config: Enable CONFIG_FIT and CONFIG_CMD_FIT

Enable these options to use FITs on sandbox.

Signed-off-by: Simon Glass <sjg@chromium.org>

include/configs/sandbox.h

@@ -29,6 +29,8 @@
 #define CONFIG_OF_HOSTFILE
 #define CONFIG_OF_LIBFDT
 #define CONFIG_LMB
+#define CONFIG_FIT
+#define CONFIG_CMD_FDT
 
 #define CONFIG_FS_FAT
 #define CONFIG_FS_EXT4