md/linear: remove typedefs: dev_info_t -> struct dev_info

Signed-off-by: NeilBrown <neilb@suse.de>
diff --git a/drivers/md/linear.h b/drivers/md/linear.h
index 367967a..4d0cf3c 100644
--- a/drivers/md/linear.h
+++ b/drivers/md/linear.h
@@ -6,13 +6,11 @@
 	sector_t	end_sector;
 };
 
-typedef struct dev_info dev_info_t;
-
 struct linear_private_data
 {
 	struct rcu_head		rcu;
 	sector_t		array_sectors;
-	dev_info_t		disks[0];
+	struct dev_info		disks[0];
 };