mpc83xx: enable libfdt by default on freescale boards

this enables libfdt code by default for the
freescale mpc8313erdb, mpc832xemds, mpc8349emds,
mpc8349itx and gp boards.

Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
diff --git a/include/configs/MPC832XEMDS.h b/include/configs/MPC832XEMDS.h
index f62ca2c4..e8c6b75 100644
--- a/include/configs/MPC832XEMDS.h
+++ b/include/configs/MPC832XEMDS.h
@@ -315,7 +315,7 @@
 #endif
 
 /* pass open firmware flat tree */
-#define CONFIG_OF_FLAT_TREE	1
+#define CONFIG_OF_LIBFDT	1
 #define CONFIG_OF_BOARD_SETUP	1
 
 /* maximum size of the flat tree (8K) */