[starnix] Increase recursion limit

This is to unblock an upstream change:
rust-lang/rust#126024

Change-Id: I4e1c0b2ba35da81c9e2c6e3ae3e07fa8db1a48a1
Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1082793
Reviewed-by: James Robinson <jamesr@google.com>
Reviewed-by: Tyler Mandry <tmandry@google.com>
Commit-Queue: Auto-Submit <auto-submit@fuchsia-infra.iam.gserviceaccount.com>
Reviewed-by: Marie Janssen <jamuraa@google.com>
Fuchsia-Auto-Submit: Julia Ryan <pineapple@google.com>

src/starnix/kernel/lib.rs

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#![recursion_limit = "256"]
+#![recursion_limit = "512"]
 use tracing_mutex as _;
 
 pub mod arch;