Make tinyvec_macros available to product and vendor

Bug: 270690570

Test: mma in external/rust/crates
Change-Id: I7f64ce925fb1fdd749960f56c54cfba31f8e18d8
diff --git a/Android.bp b/Android.bp
index 9f5b9e7..8d96aaf 100644
--- a/Android.bp
+++ b/Android.bp
@@ -45,5 +45,7 @@
         "//apex_available:platform",
         "com.android.resolv",
     ],
+    product_available: true,
+    vendor_available: true,
     min_sdk_version: "29",
 }