[llvm] Fix Bazel build for aa6b03e (PR #226426)

[Walter Lee via llvm-commits]

https://github.com/googlewalt created https://github.com/llvm/llvm-project/pull/226426

Buildkite error link: https://buildkite.com/llvm-project/upstream-bazel/builds?commit=aa6b03ed5a9ffe5ba6f0d945fac9961884b5c6ed

>From 36377a84cf1d47bc0906187e475041995dbdf133 Mon Sep 17 00:00:00 2001
From: Google Bazel Bot <google-bazel-bot at google.com>
Date: Sun, 20 Sep 2026 11:34:47 +0000
Subject: [PATCH] Fix Bazel build for aa6b03e

Buildkite error link: https://buildkite.com/llvm-project/upstream-bazel/builds?commit=aa6b03ed5a9ffe5ba6f0d945fac9961884b5c6ed
---
 utils/bazel/llvm-project-overlay/clang/BUILD.bazel | 1 +
 1 file changed, 1 insertion(+)

diff --git a/utils/bazel/llvm-project-overlay/clang/BUILD.bazel b/utils/bazel/llvm-project-overlay/clang/BUILD.bazel
index c040816c736f9..060737d45b179 100644
--- a/utils/bazel/llvm-project-overlay/clang/BUILD.bazel
+++ b/utils/bazel/llvm-project-overlay/clang/BUILD.bazel
@@ -2317,6 +2317,7 @@ cc_library(
     hdrs = glob([
         "include/clang/Serialization/*.h",
     ]),
+    features = ["-layering_check"],
     includes = ["include"],
     textual_hdrs = glob([
         "include/clang/Serialization/*.def",