Fix OneNAND build break

Since page size field is changed from oobblock to writesize. But OneNAND is not updated.
- fix bufferram management at erase operation
This patch includes the NAND/OneNAND state filed too.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>

include/linux/mtd/nand_legacy.h

@@ -54,18 +54,6 @@
 #define NAND_CMD_ERASE2		0xd0
 #define NAND_CMD_RESET		0xff
 
-/*
- * Enumeration for NAND flash chip state
- */
-typedef enum {
-	FL_READY,
-	FL_READING,
-	FL_WRITING,
-	FL_ERASING,
-	FL_SYNCING
-} nand_state_t;
-
-
 /*
  * NAND Private Flash Chip Data
  *