[clang] [OpenCL] Add cl_ext_image_unorm_int_2_101010_EXT extension (PR #113145)

[Kévin Petit via cfe-commits]

kpet wrote:

AFAICT, the new tests ran and the failed tests are completely unrelated to this change. Merging.

https://github.com/llvm/llvm-project/pull/113145