Update module with host_cross_supported

Bug: 353739440

Test: m rust
Change-Id: I3a334f983942688e3cd7982acf985a0fb866e6e5
diff --git a/Android.bp b/Android.bp
index 003d745..109ebb1 100644
--- a/Android.bp
+++ b/Android.bp
@@ -55,6 +55,7 @@
 
 rust_test_host {
     name: "remain_test_tests_stable",
+    host_cross_supported: false,
     crate_name: "stable",
     cargo_env_compat: true,
     cargo_pkg_version: "0.2.12",
@@ -78,6 +79,7 @@
 
 rust_test_host {
     name: "remain_test_tests_unstable",
+    host_cross_supported: false,
     crate_name: "unstable",
     cargo_env_compat: true,
     cargo_pkg_version: "0.2.12",