[MTD] [OneNAND] proper onenand_bbt_read_oob() prototype

This patch adds a proper prototype for onenand_bbt_read_oob() in
include/linux/mtd/onenand.h

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
diff --git a/include/linux/mtd/onenand.h b/include/linux/mtd/onenand.h
index fd0a260..9aa2a91 100644
--- a/include/linux/mtd/onenand.h
+++ b/include/linux/mtd/onenand.h
@@ -187,4 +187,7 @@
         char *name;
 };
 
+int onenand_bbt_read_oob(struct mtd_info *mtd, loff_t from,
+			 struct mtd_oob_ops *ops);
+
 #endif	/* __LINUX_MTD_ONENAND_H */