[POWERPC] 4xx: Use correct board info structure in cuboot wrappers

Correct the remaining 44x cuboot wrappers to define TARGET_4xx as well.  This
creates the correct structure to use, including things like the second MAC
address.

Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
diff --git a/arch/powerpc/boot/cuboot-katmai.c b/arch/powerpc/boot/cuboot-katmai.c
index c021167..5434d70 100644
--- a/arch/powerpc/boot/cuboot-katmai.c
+++ b/arch/powerpc/boot/cuboot-katmai.c
@@ -22,6 +22,7 @@
 #include "44x.h"
 #include "cuboot.h"
 
+#define TARGET_4xx
 #define TARGET_44x
 #include "ppcboot.h"