Add license type: BSD+MIT+PSFL are NOTICE licenses

Bug: 68860345
Bug: 69058154
Bug: 151953481

Test: no code changes

Change-Id: I48dfff69677da4266d6d85d3a79b610c3964d231
diff --git a/METADATA b/METADATA
index 1294a7f..9b55386 100644
--- a/METADATA
+++ b/METADATA
@@ -10,6 +10,7 @@
     value: "https://github.com/fmtlib/fmt.git"
   }
   version: "6.2.0"
+  license_type: NOTICE
   last_upgrade_date {
     year: 2020
     month: 4