Fix JFFS2 support for legacy NAND driver.

Some more NAND cleanup and small fixes.
diff --git a/include/configs/VCMA9.h b/include/configs/VCMA9.h
index 3f29190..5f48a70 100644
--- a/include/configs/VCMA9.h
+++ b/include/configs/VCMA9.h
@@ -248,6 +248,7 @@
  */
 #if (CONFIG_COMMANDS & CFG_CMD_NAND)
 
+#define CFG_NAND_LEGACY
 #define CFG_MAX_NAND_DEVICE	1	/* Max number of NAND devices		*/
 #define SECTORSIZE 512