[clang] [libunwind] [llvm] [wasm] Toolchain support for `wasm32-wali-linux-musl` target (PR #156087)

[Arjun Ramesh via llvm-commits]

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@@ -6,6 +6,8 @@
 //
 //===----------------------------------------------------------------------===//
 
+#if !defined(__wasm__)
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arjunr2 wrote:

The WALI targets add the `__linux__` define, which is used under specific cases in `assembly.h`. Figured since the header is not used anywhere else besides here and not used for any of the wasm target, it would make sense to gate it completely 

https://github.com/llvm/llvm-project/pull/156087