cudaPackages.cuda-library-samples: set `meta.platforms`

pkgs/development/cuda-modules/cuda-library-samples/generic.nix

···
         cuSPARSE, cuSOLVER, cuFFT, cuRAND, NPP and nvJPEG.
       '';
       license = lib.licenses.bsd3;
+      platforms = [ "x86_64-linux" ];
       maintainers = with lib.maintainers; [ obsidian-systems-maintenance ] ++ lib.teams.cuda.members;
     };
   };