[clang] [clang] [Driver] Treat MuslEABIHF as a hardfloat environment wrt multiarch directories (PR #77536)

[Fangrui Song via cfe-commits]

MaskRay wrote:

`bool isEABIHF` from clang/lib/CodeGen/Targets/ARM.cpp can probably be factored.

https://github.com/llvm/llvm-project/pull/77536