[llvm] [SPIR-V] Implement builtins for OpIAddCarry/OpISubBorrow and improve/fix type inference (PR #115192)

[Michal Paszkowski via llvm-commits]

https://github.com/michalpaszkowski approved this pull request.

LGTM! Thank you for the patch! This also fixes the issue https://github.com/llvm/llvm-project/issues/111818

https://github.com/llvm/llvm-project/pull/115192