Make cexpr available to product and vendor

Bug: 270690570

Test: mma in external/rust/crates
Change-Id: Ic8ede09bbebffb0567b89e8456b02fbfe9ad6af4
diff --git a/Android.bp b/Android.bp
index 02c5169..09ee54e 100644
--- a/Android.bp
+++ b/Android.bp
@@ -52,4 +52,6 @@
         "//apex_available:platform",
         "//apex_available:anyapex",
     ],
+    product_available: true,
+    vendor_available: true,
 }