[mlir][GPU] Do not strip location info when lowering to NVVM (#120432)

This is needed for a subsequent commit that reads location information
when lowering `gpu.assert`.

Author: matthias-springer

mlir/lib/Dialect/GPU/Pipelines/GPUToNVVMPipeline.cpp

@@ -73,7 +73,6 @@ void buildCommonPassPipeline(
 //===----------------------------------------------------------------------===//
 void buildGpuPassPipeline(OpPassManager &pm,
                           const mlir::gpu::GPUToNVVMPipelineOptions &options) {
-  pm.addNestedPass<gpu::GPUModuleOp>(createStripDebugInfoPass());
   ConvertGpuOpsToNVVMOpsOptions opt;
   opt.useBarePtrCallConv = options.kernelUseBarePtrCallConv;
   opt.indexBitwidth = options.indexBitWidth;