[clang] [llvm] [llvm] Add triples for managarm (PR #87845)

[Fangrui Song via llvm-commits]

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@@ -0,0 +1,227 @@
+//===--- Managarm.h - Managarm ToolChain Implementations --------*- C++ -*-===//
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MaskRay wrote:

For new files, just use `//===----------------------------------------------------------------------===//`
per latest https://llvm.org/docs/CodingStandards.html#file-headers

The license lines below should be fixed

https://github.com/llvm/llvm-project/pull/87845