Add METADATA to arm-trusted-firmware: BSD+LLVM+MIT=NOTICE am: e85755b569

Change-Id: I6d342f9d86f1e238a321b714f1d1408a192ae62d
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
+}