Add METADATA to squashfs-tools: GPL+LGPL=RESTRICTED

Bug: 68860345
Bug: 69058154
Bug: 151953481

Test: no code changes
Change-Id: I92098d4bcf326c492fd68c5dfaf4e5d1705c5fc3
diff --git a/METADATA b/METADATA
new file mode 100644
index 0000000..6d8601b
--- /dev/null
+++ b/METADATA
@@ -0,0 +1,3 @@
+third_party {
+  license_type: RESTRICTED
+}