[llvm] [AMDGPU] MCExpr printing helper with KnownBits support (PR #95951)

[Janek van Oirschot via llvm-commits]

JanekvO wrote:

Been trying to expand this to the amdgpu kernel_code_t metadata printing but having some issues with scoping (`MCTargetDesc` doesn't seem accessible to `Utils`). Might move the helper function elsewhere for better reach to all the possible metadata printers.

https://github.com/llvm/llvm-project/pull/95951