[clang] Remove Linux search paths on Windows (PR #113628)

[Joseph Huber via cfe-commits]

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@@ -6440,7 +6440,8 @@ const ToolChain &Driver::getToolChain(const ArgList &Args,
       TC = std::make_unique<toolchains::NVPTXToolChain>(*this, Target, Args);
       break;
     case llvm::Triple::AMDHSA:
-      TC = std::make_unique<toolchains::ROCMToolChain>(*this, Target, Args);
+      TC = std::make_unique<toolchains::ROCMToolChain>(*this, Target, Args,
+                                                       Target.isOSWindows());
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jhuber6 wrote:

We do stuff like this in a *ton* of places,
```
clang/lib/Driver/ToolChains/Cuda.cpp
387:      static_cast<const toolchains::NVPTXToolChain &>(getToolChain());
533:      static_cast<const toolchains::CudaToolChain &>(getToolChain());
584:      static_cast<const toolchains::NVPTXToolChain &>(getToolChain());
```

https://github.com/llvm/llvm-project/pull/113628