[llvm] [DirectX][NFC] Change usage pattern *Dxil* to *DXIL* for uniformity (PR #80778)

[S. Bharadwaj Yadavalli via llvm-commits]

bharadwajy wrote:

May I request one of the approvers / reviewers to help by pushing the changes, I do not have write access to `llvm-project` repo? 

Thanks!

https://github.com/llvm/llvm-project/pull/80778