mtd,ubi,ubifs: sync with linux v3.15

snyc with linux v3.15:

commit 1860e379875dfe7271c649058aeddffe5afd9d0d
Author: Linus Torvalds <torvalds@linux-foundation.org>
Date:   Sun Jun 8 11:19:54 2014 -0700

    Linux 3.15

Signed-off-by: Heiko Schocher <hs@denx.de>
Cc: Scott Wood <scottwood@freescale.com>
Cc: Tom Rini <trini@ti.com>
diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c
index 3dc47b3..2f20b92 100644
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -178,11 +178,12 @@
 						 retlen, buf);
 }
 
-static int part_get_user_prot_info(struct mtd_info *mtd,
-		struct otp_info *buf, size_t len)
+static int part_get_user_prot_info(struct mtd_info *mtd, size_t len,
+				   size_t *retlen, struct otp_info *buf)
 {
 	struct mtd_part *part = PART(mtd);
-	return part->master->_get_user_prot_info(part->master, buf, len);
+	return part->master->_get_user_prot_info(part->master, len, retlen,
+						 buf);
 }
 
 static int part_read_fact_prot_reg(struct mtd_info *mtd, loff_t from,
@@ -193,11 +194,12 @@
 						 retlen, buf);
 }
 
-static int part_get_fact_prot_info(struct mtd_info *mtd, struct otp_info *buf,
-		size_t len)
+static int part_get_fact_prot_info(struct mtd_info *mtd, size_t len,
+				   size_t *retlen, struct otp_info *buf)
 {
 	struct mtd_part *part = PART(mtd);
-	return part->master->_get_fact_prot_info(part->master, buf, len);
+	return part->master->_get_fact_prot_info(part->master, len, retlen,
+						 buf);
 }
 
 static int part_write(struct mtd_info *mtd, loff_t to, size_t len,