[llvm] [ARM][FastISel]Fix FastISel fail for softfp when set target to armebv… (PR #97422)

[David Green via llvm-commits]

https://github.com/davemgreen approved this pull request.

>From what I can tell this LGTM, compared to the SDAG version.

https://github.com/llvm/llvm-project/pull/97422