sbc8560: enable CONFIG_OF_LIBFDT by default

Make the default build for the sbc8560 board be powerpc
capable with libfdt support.
Signed-off-by: NPaul Gortmaker <paul.gortmaker@windriver.com>

include/configs/sbc8560.h

@@ -200,6 +200,11 @@
 #define CFG_PROMPT_HUSH_PS2 "> "
 #endif
 
+/* pass open firmware flat tree */
+#define CONFIG_OF_LIBFDT                1
+#define CONFIG_OF_BOARD_SETUP           1
+#define CONFIG_OF_STDOUT_VIA_ALIAS      1
+
 /*
  * I2C
  */