[MTD] proper prototypes for nftl_{read,write}_oob()

This patch adds proper prototypes for nftl_{read,write}_oob() in
include/linux/mtd/nftl.h

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
diff --git a/include/linux/mtd/nftl.h b/include/linux/mtd/nftl.h
index bcf2fb3f..001eec5 100644
--- a/include/linux/mtd/nftl.h
+++ b/include/linux/mtd/nftl.h
@@ -43,6 +43,11 @@
 int NFTL_mount(struct NFTLrecord *s);
 int NFTL_formatblock(struct NFTLrecord *s, int block);
 
+int nftl_read_oob(struct mtd_info *mtd, loff_t offs, size_t len,
+		  size_t *retlen, uint8_t *buf);
+int nftl_write_oob(struct mtd_info *mtd, loff_t offs, size_t len,
+		   size_t *retlen, uint8_t *buf);
+
 #ifndef NFTL_MAJOR
 #define NFTL_MAJOR 93
 #endif