Fix license_type. Contains LGPL am: db9a4d4d5c

Original change: https://android-review.googlesource.com/c/platform/external/vboot_reference/+/1556651

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I237118d7ac9b05f34ba889decca999140883a4f1
diff --git a/METADATA b/METADATA
index d97975c..b6aba4e 100644
--- a/METADATA
+++ b/METADATA
@@ -1,3 +1,4 @@
 third_party {
-  license_type: NOTICE
+  # would be NOTICE save for scripts/image_signing/lib/shflags/shflags
+  license_type: RESTRICTED
 }