[clang] [ARM] enable FENV_ACCESS pragma support for hard-float targets (PR #137101)

[David Green via cfe-commits]

davemgreen wrote:

@john-brawn-arm did the work for AArch64, I'm not sure if he would have an idea how much work it would involve for the Arm backend.

https://github.com/llvm/llvm-project/pull/137101