Add license module

Test: Presubmit
Change-Id: I51e64790828571e376ade4e1a809608a0b39db20
diff --git a/Android.bp b/Android.bp
index 3962e13..1636a54 100644
--- a/Android.bp
+++ b/Android.bp
@@ -1,7 +1,24 @@
 // This file is generated by cargo_embargo.
 // Do not modify this file as changes will be overridden on upgrade.
 
-// TODO: Add license.
+package {
+    default_applicable_licenses: ["external_rust_crates_mls_rs_codec_derive_license"],
+}
+
+// See: http://go/android-license-faq
+license {
+    name: "external_rust_crates_mls_rs_codec_derive_license",
+    visibility: [":__subpackages__"],
+    license_kinds: [
+        "SPDX-license-identifier-Apache-2.0",
+        "SPDX-license-identifier-MIT",
+    ],
+    license_text: [
+        "LICENSE-apache",
+        "LICENSE-mit",
+    ],
+}
+
 rust_proc_macro {
     name: "libmls_rs_codec_derive",
     crate_name: "mls_rs_codec_derive",