[CIR][AMDGPU] Add module flags for AMDGPU target using amendOperation of CIRDialectLLVMIRTranslationInterface (#186073)

Add the amendOperation override to handle CIR dialect attributes during
MLIR-to-LLVM IR translation. This dispatches to  amendModule for ModuleOp,
enabling module metadata.

This PR also adds support to emit AMDGPU-specific module flags
amdhsa_code_object_version and amdgpu_printf_kind to match OGCG
behavior.

In CIRGenModule, the flags are stored as CIR module attributes:

cir.amdhsa_code_object_version (integer)
cir.amdgpu_printf_kind (string: "hostcall" or "buffered")
During lowering to LLVM IR (in LowerToLLVMIR.cpp), these attributes are
converted to LLVM module flags.

Upstreaming basic changes from clangIR PRs: 

https://github.com/llvm/clangir/commit/61e9ebd9f80393a0d6d792142642e8edddbe1adc
https://github.com/llvm/clangir/pull/768
https://github.com/llvm/clangir/pull/773
https://github.com/llvm/clangir/pull/2100
7 files changed
tree: dc704e68d15ee5148dd2f94d4a767618a89b6ce6
  1. .ci/
  2. .github/
  3. bolt/
  4. clang/
  5. clang-tools-extra/
  6. cmake/
  7. compiler-rt/
  8. cross-project-tests/
  9. flang/
  10. flang-rt/
  11. libc/
  12. libclc/
  13. libcxx/
  14. libcxxabi/
  15. libsycl/
  16. libunwind/
  17. lld/
  18. lldb/
  19. llvm/
  20. llvm-libgcc/
  21. mlir/
  22. offload/
  23. openmp/
  24. orc-rt/
  25. polly/
  26. runtimes/
  27. third-party/
  28. utils/
  29. .clang-format
  30. .clang-format-ignore
  31. .clang-tidy
  32. .git-blame-ignore-revs
  33. .gitattributes
  34. .gitignore
  35. .mailmap
  36. CODE_OF_CONDUCT.md
  37. CONTRIBUTING.md
  38. LICENSE.TXT
  39. pyproject.toml
  40. README.md
  41. SECURITY.md
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