samsung: Enable device tree for smdkc100

Change this board to add a device tree.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
diff --git a/include/configs/smdkc100.h b/include/configs/smdkc100.h
index c9a2e15..566028d 100644
--- a/include/configs/smdkc100.h
+++ b/include/configs/smdkc100.h
@@ -217,4 +217,6 @@
 #define CONFIG_ENV_SROM_BANK   3       /* Select SROM Bank-3 for Ethernet*/
 #endif /* CONFIG_CMD_NET */
 
+#define CONFIG_OF_LIBFDT
+
 #endif	/* __CONFIG_H */