Fix license_type. OEM licenses.

See: http://go/android-license-checking-v2-lsc

Test: m all

Bug: 151953481
Bug: 151177513
Bug: 67772237
Change-Id: I2cf29b9f918b8e90cd062d35449b763af8f43563
diff --git a/METADATA b/METADATA
index d97975c..3814b8d 100644
--- a/METADATA
+++ b/METADATA
@@ -1,3 +1,6 @@
+# *** THIS PACKAGE HAS SPECIAL LICENSING CONDITIONS.  PLEASE
+#     CONSULT THE OWNERS AND opensource-licensing@google.com BEFORE
+#     DEPENDING ON IT IN YOUR PROJECT. ***
 third_party {
-  license_type: NOTICE
+  license_type: BY_EXCEPTION_ONLY
 }