[SPIRV] Make access qualifier optional for spirv.Image type (#110852)

The SPIRV backend has a special type named `spirv.Image`. This type is
meant to correspond to the OpTypeImage instruction in SPIR-V, but there
is one difference. The access qualifier operand in OpTypeImage is
optional. On top of that, the access qualifiers are only valid for
kernels, and not for shaders.

We want to reuse this type when generating shader from HLSL, but we
can't use the access qualifier. This commit make the access qualifer
optional in the target extension type.

The same is done for `spirv.SampledImage`.

Contributes to #81036
8 files changed
tree: eec58f7efd53cd630356a1cc1e08320e6fb200c1
  1. .ci/
  2. .github/
  3. bolt/
  4. clang/
  5. clang-tools-extra/
  6. cmake/
  7. compiler-rt/
  8. cross-project-tests/
  9. flang/
  10. libc/
  11. libclc/
  12. libcxx/
  13. libcxxabi/
  14. libunwind/
  15. lld/
  16. lldb/
  17. llvm/
  18. llvm-libgcc/
  19. mlir/
  20. offload/
  21. openmp/
  22. polly/
  23. pstl/
  24. runtimes/
  25. third-party/
  26. utils/
  27. .clang-format
  28. .clang-tidy
  29. .git-blame-ignore-revs
  30. .gitattributes
  31. .gitignore
  32. .mailmap
  33. CODE_OF_CONDUCT.md
  34. CONTRIBUTING.md
  35. LICENSE.TXT
  36. pyproject.toml
  37. README.md
  38. SECURITY.md
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