[llvm] [llvm] Use masm for UEFI (PR #132461)

[Petr Hosek via llvm-commits]

petrhosek wrote:

Can you remove the second UEFI case? https://github.com/llvm/llvm-project/blob/8eb73d02ac0b402a1a56e17a1a3dbdd4f31e5b21/llvm/lib/Target/X86/MCTargetDesc/X86MCTargetDesc.cpp#L455-L457

https://github.com/llvm/llvm-project/pull/132461