zte's code,first commit

Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/fs/btrfs/version.h b/ap/os/linux/linux-3.4.x/fs/btrfs/version.h
new file mode 100644
index 0000000..9bf3946
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/fs/btrfs/version.h
@@ -0,0 +1,4 @@
+#ifndef __BTRFS_VERSION_H
+#define __BTRFS_VERSION_H
+#define BTRFS_BUILD_VERSION "Btrfs"
+#endif