86xx: Convert sbc8641d to use libfdt.

This is the proper fix for a missing closing brace in the function
ft_cpu_setup() noticed by joe.hamman <at> embeddedspecialties.com.
The ft_cpu_setup() function in mpc8641hpcn.c should have been
removed earlier as it was under the obsolete CONFIG_OF_FLAT_TREE,
but was missed.  Only, the sbc8641d was nominally still using it.
It all got ripped out, and the funcality that was in ft_board_setup()
was refactored to remove the CPU portions into the new file
cpu/mpc86xx/fdt.c instead.  Make sbc8641d use this now.

Based loosely on an original patch from joe.hamman@embeddedspecialties.com

Signed-off-by: Jon Loeliger <jdl@freescale.com>
diff --git a/include/configs/sbc8641d.h b/include/configs/sbc8641d.h
index 1991a8c..18cedff 100644
--- a/include/configs/sbc8641d.h
+++ b/include/configs/sbc8641d.h
@@ -268,13 +268,9 @@
 /*
  * Pass open firmware flat tree to kernel
  */
-#define CONFIG_OF_FLAT_TREE	1
-#define CONFIG_OF_BOARD_SETUP	1
-
-#define OF_CPU		"PowerPC,8641@0"
-#define OF_SOC		"soc@f8000000"
-#define OF_TBCLK	(bd->bi_busfreq / 4)
-#define OF_STDOUT_PATH	"/soc@f8000000/serial@4500"
+#define CONFIG_OF_LIBFDT		1
+#define CONFIG_OF_BOARD_SETUP		1
+#define CONFIG_OF_STDOUT_VIA_ALIAS	1
 
 #define CFG_64BIT_VSPRINTF	1
 #define CFG_64BIT_STRTOUL	1