nixos/flashprog: Use mkEnableOption instead of mkOption

Remove some overhead by using mkEnableOption.

Signed-off-by: Felix Singer <[e-mail]>

nixos/modules/programs/flashprog.nix

···
 in
 {
   options.programs.flashprog = {
-    enable = lib.mkOption {
-      type = lib.types.bool;
-      default = false;
-      description = ''
-        Installs flashprog and configures udev rules for programmers
-        used by flashprog.
-      '';
-    };
+    enable = lib.mkEnableOption ''
+      configuring flashprog udev rules and
+      installing flashprog as system package
+    '';
     package = lib.mkPackageOption pkgs "flashprog" { };
   };