[llvm] [Offload] Add olKernelMaxGroupSize (PR #142950)

[Joseph Huber via llvm-commits]

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@@ -468,6 +468,10 @@ Error olDestroyProgram_impl(ol_program_handle_t Program) {
   return olDestroy(Program);
 }
 
+inline GenericKernelTy *getOmpKernel(ol_kernel_handle_t OlKernel) {
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jhuber6 wrote:

`Omp` here confused me because I thought it was OpenMP.

https://github.com/llvm/llvm-project/pull/142950