md: use correct type in super_1_sync

If we want to convert from a little endian format we need to cast
to a little endian type, otherwise sparse will be unhappy.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NSong Liu <songliubraving@fb.com>

drivers/md/md.c

@@ -1872,7 +1872,7 @@ static void super_1_sync(struct mddev *mddev, struct md_rdev *rdev)
 		md_error(mddev, rdev);
 	else {
 		struct badblocks *bb = &rdev->badblocks;
-		u64 *bbp = (u64 *)page_address(rdev->bb_page);
+		__le64 *bbp = (__le64 *)page_address(rdev->bb_page);
 		u64 *p = bb->page;
 		sb->feature_map |= cpu_to_le32(MD_FEATURE_BAD_BLOCKS);
 		if (bb->changed) {