Add METADATA to arm64: Apache2=NOTICE

Bug: 68860345
Bug: 69058154
Bug: 151953481

Test: no code changes
Change-Id: I2be6e7b2df6bbd6d4b074e1be9b19774784ca5a1

METADATA

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
+}