Add VTS testing libavf LLNDK

Bug: 383029894
Test: atest vts_libavf_test
Change-Id: I7728a75e3ce8415a0e17a4d25dff43d6c3a7d3a3
diff --git a/libs/libavf/Android.bp b/libs/libavf/Android.bp
index 079f4ae..b583e21 100644
--- a/libs/libavf/Android.bp
+++ b/libs/libavf/Android.bp
@@ -10,6 +10,7 @@
     source_stem: "bindings",
     bindgen_flags: ["--default-enum-style rust"],
     apex_available: ["com.android.virt"],
+    visibility: ["//packages/modules/Virtualization/tests/vts"],
 }
 
 rust_defaults {