Update TEST_MAPPING

Test: cd external/rust/crates && atest --host -c
Change-Id: Ib48a7fe57c6a644e1a44c3d697146c3fec568edd
diff --git a/TEST_MAPPING b/TEST_MAPPING
index 713deb2..b91be4d 100644
--- a/TEST_MAPPING
+++ b/TEST_MAPPING
@@ -5,6 +5,9 @@
       "path": "external/rust/crates/parking_lot_core"
     },
     {
+      "path": "external/rust/crates/tinyvec"
+    },
+    {
       "path": "external/rust/crates/vulkano"
     }
   ],