mtd: introduce mtd_panic_write 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/mtdoops.c b/drivers/mtd/mtdoops.c
index 9c9d586..7be2018 100644
--- a/drivers/mtd/mtdoops.c
+++ b/drivers/mtd/mtdoops.c
@@ -222,8 +222,8 @@
 	hdr[1] = MTDOOPS_KERNMSG_MAGIC;
 
 	if (panic)
-		ret = mtd->panic_write(mtd, cxt->nextpage * record_size,
-					record_size, &retlen, cxt->oops_buf);
+		ret = mtd_panic_write(mtd, cxt->nextpage * record_size,
+				      record_size, &retlen, cxt->oops_buf);
 	else
 		ret = mtd_write(mtd, cxt->nextpage * record_size,
 				record_size, &retlen, cxt->oops_buf);