linuxPackages.rtl88xxau-aircrack: mark broken on Linux 5.18

pkgs/os-specific/linux/rtl88xxau-aircrack/default.nix

···
     license = licenses.gpl2Only;
     maintainers = [ maintainers.jethro ];
     platforms = [ "x86_64-linux" "i686-linux" "aarch64-linux" ];
+    broken = kernel.kernelAtLeast "5.18";
   };
 }