[clang] [NFC][clang-sycl-linker] Apply LLVM coding standards to ClangSYCLLinker.cpp (PR #200543)

[Yury Plyakhin via cfe-commits]

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@@ -1,10 +1,10 @@
-//=-------- clang-sycl-linker/ClangSYCLLinker.cpp - SYCL Linker util -------=//
+//===----------------------------------------------------------------------===//
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YuriPlyakhin wrote:

@bader , should not we have file name or something here?

https://github.com/llvm/llvm-project/pull/200543