TQM8xx: enable device tree support on all TQM8xx based boards.

Also enable support for CONFIG_HWCONFIG because we use this for
configuring if this hardware has a FEC or not.

syntax:

hwconfig=fec:on   if hardware has an fec
hwconfig=fec:off  if hardware has no fec

Signed-off-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Wolfgang Denk <wd@denx.de>
diff --git a/include/configs/SM850.h b/include/configs/SM850.h
index 7266f9a..56f03e2 100644
--- a/include/configs/SM850.h
+++ b/include/configs/SM850.h
@@ -372,4 +372,9 @@
 #define	BOOTFLAG_COLD	0x01		/* Normal Power-On: Boot from FLASH	*/
 #define BOOTFLAG_WARM	0x02		/* Software reboot			*/
 
+/* pass open firmware flat tree */
+#define CONFIG_OF_LIBFDT	1
+#define CONFIG_OF_BOARD_SETUP	1
+#define CONFIG_HWCONFIG		1
+
 #endif	/* __CONFIG_H */