uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

nixos/modules/hardware/saleae-logic.nix

@@ -0,0 +1,25 @@
+{ config, lib, pkgs, ... }:
+
+let
+  cfg = config.hardware.saleae-logic;
+in
+{
+  options.hardware.saleae-logic = {
+    enable = lib.mkEnableOption "udev rules for Saleae Logic devices";
+
+    package = lib.mkOption {
+      type = lib.types.package;
+      default = pkgs.saleae-logic-2;
+      defaultText = lib.literalExpression "pkgs.saleae-logic-2";
+      description = ''
+        Saleae Logic package to use.
+      '';
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    services.udev.packages = [ cfg.package ];
+  };
+
+  meta.maintainers = with lib.maintainers; [ chivay ];
+}