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/steam-hardware.nix

@@ -0,0 +1,32 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+
+  cfg = config.hardware.steam-hardware;
+
+in
+
+{
+  options.hardware.steam-hardware = {
+    enable = mkOption {
+      type = types.bool;
+      default = false;
+      description = "Enable udev rules for Steam hardware such as the Steam Controller, other supported controllers and the HTC Vive";
+    };
+  };
+
+  config = mkIf cfg.enable {
+    services.udev.packages = [
+      pkgs.steamPackages.steam
+    ];
+
+    # The uinput module needs to be loaded in order to trigger the udev rules
+    # defined in the steam package for setting permissions on /dev/uinput.
+    #
+    # If the udev rules are not triggered, some controllers won't work with
+    # steam.
+    boot.kernelModules = [ "uinput" ];
+  };
+}