[llvm] [offload] Add olLaunchKernelWithPtrArgs with an argument pointer array (PR #194333)

[Piotr Balcer via llvm-commits]

pbalcer wrote:

> Sure, that sounds reasonable. I don't have a strong opinion either way. I agree that the extra validation may be useful. I will make that change.

Done. `olLaunchKernel` now takes number of arguments, and validates it against what the kernel expects.

https://github.com/llvm/llvm-project/pull/194333