NAND: Fix warning Please define CONFIG_SYS_64BIT_VSPRINTF...

Commit 8d2effea added a warning for configurations that use NAND
without defining the (then necessary) CONFIG_SYS_64BIT_VSPRINTF but
failed to fix the affected boards.

Signed-off-by: Wolfgang Denk <wd@denx.de>
diff --git a/include/configs/VOH405.h b/include/configs/VOH405.h
index 38a1d0d..17397e8 100644
--- a/include/configs/VOH405.h
+++ b/include/configs/VOH405.h
@@ -169,6 +169,8 @@
 #define CONFIG_SYS_NAND_SKIP_BAD_DOT_I 1       /* ".i" read skips bad blocks   */
 #define CONFIG_SYS_NAND_QUIET          1
 
+#define CONFIG_SYS_64BIT_VSPRINTF	/* needed for nand_util.c */
+
 /*-----------------------------------------------------------------------
  * PCI stuff
  *-----------------------------------------------------------------------