Add METADATA to vboot_reference: BSD=NOTICE am: a5ee70c3bc

Change-Id: I0115d4f14a8a3e4eeb5b69224b5fc36fb52407e8
diff --git a/METADATA b/METADATA
new file mode 100644
index 0000000..d97975c
--- /dev/null
+++ b/METADATA
@@ -0,0 +1,3 @@
+third_party {
+  license_type: NOTICE
+}