[llvm] [SPIR-V] Fix OpName and LinkageAttributes decoration of global variables (PR #120492)

[Vyacheslav Levytskyy via llvm-commits]

VyacheslavLevytskyy wrote:

The reason for a failure in Github Actions is not related to the PR, see: https://github.com/llvm/llvm-project/pull/74092 for the discussion.

https://github.com/llvm/llvm-project/pull/120492