zte's code,first commit

Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/drivers/md/linear.h b/ap/os/linux/linux-3.4.x/drivers/md/linear.h
new file mode 100644
index 0000000..b685ddd
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/md/linear.h
@@ -0,0 +1,15 @@
+#ifndef _LINEAR_H
+#define _LINEAR_H
+
+struct dev_info {
+	struct md_rdev	*rdev;
+	sector_t	end_sector;
+};
+
+struct linear_conf
+{
+	struct rcu_head		rcu;
+	sector_t		array_sectors;
+	struct dev_info		disks[0];
+};
+#endif