siso: include *_ignorelist.txt in clang toolchain

third_party/llvm-build/Release+Asserts/lib/clang/*/share/*_ignorelist.txt
are used when sanitizer is enabled.
Add them in clang toolchain tree.

Bug: b/332809471
Change-Id: If8ddb52269fdcc3789d797224ca54a6ce05cf68d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5422831
Commit-Queue: Fumitoshi Ukai <ukai@google.com>
Auto-Submit: Fumitoshi Ukai <ukai@google.com>
Commit-Queue: Junji Watanabe <jwata@google.com>
Reviewed-by: Junji Watanabe <jwata@google.com>
Cr-Commit-Position: refs/heads/main@{#1282365}
NOKEYCHECK=True
GitOrigin-RevId: 943cd73d6f64cdf07491d9f99c6bbe6fc7f36cc3
diff --git a/siso/clang_all.star b/siso/clang_all.star
index 0946eec..59ff5c0 100644
--- a/siso/clang_all.star
+++ b/siso/clang_all.star
@@ -32,6 +32,7 @@
                 "bin/clang",
                 "bin/clang++",
                 "bin/clang-cl.exe",
+                "*_ignorelist.txt",
             ],
         },
     }