mtd: introduce mtd_resume interface

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c
index 0db455d..376fbfd 100644
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
@@ -129,7 +129,7 @@
 	struct mtd_info *mtd = dev_to_mtd(dev);
 	
 	if (mtd && mtd->resume)
-		mtd->resume(mtd);
+		mtd_resume(mtd);
 	return 0;
 }