Add METADATA to gemmlowp: Apache2=NOTICE am: 46c65a09d6

Change-Id: I2872009b1efd3600399f603cd1a0d18cfcd050b9
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
+}