[llvm] [SPIR-V] Emit valid SPIR-V code for integer sizes other than 8,16,32,64 (PR #94219)

[Vyacheslav Levytskyy via llvm-commits]

https://github.com/VyacheslavLevytskyy ready_for_review https://github.com/llvm/llvm-project/pull/94219