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/video/amdgpu-pro.nix

@@ -0,0 +1,71 @@
+# This module provides the proprietary AMDGPU-PRO drivers.
+
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+
+  drivers = config.services.xserver.videoDrivers;
+
+  enabled = elem "amdgpu-pro" drivers;
+
+  package = config.boot.kernelPackages.amdgpu-pro;
+  package32 = pkgs.pkgsi686Linux.linuxPackages.amdgpu-pro.override { kernel = null; };
+
+  opengl = config.hardware.opengl;
+
+in
+
+{
+
+  config = mkIf enabled {
+
+    nixpkgs.config.xorg.abiCompat = "1.20";
+
+    services.xserver.drivers = singleton
+      { name = "amdgpu"; modules = [ package ]; display = true; };
+
+    hardware.opengl.package = package;
+    hardware.opengl.package32 = package32;
+    hardware.opengl.setLdLibraryPath = true;
+
+    boot.extraModulePackages = [ package.kmod ];
+
+    boot.kernelPackages = pkgs.linuxKernel.packagesFor
+      (pkgs.linuxKernel.kernels.linux_5_10.override {
+        structuredExtraConfig = {
+          DEVICE_PRIVATE = kernel.yes;
+          KALLSYMS_ALL = kernel.yes;
+        };
+      });
+
+    hardware.firmware = [ package.fw ];
+
+    system.activationScripts.setup-amdgpu-pro = ''
+      ln -sfn ${package}/opt/amdgpu{,-pro} /run
+    '';
+
+    system.requiredKernelConfig = with config.lib.kernelConfig; [
+      (isYes "DEVICE_PRIVATE")
+      (isYes "KALLSYMS_ALL")
+    ];
+
+    boot.initrd.extraUdevRulesCommands = mkIf (!config.boot.initrd.systemd.enable) ''
+      cp -v ${package}/etc/udev/rules.d/*.rules $out/
+    '';
+    boot.initrd.services.udev.packages = [ package ];
+
+    environment.systemPackages =
+      [ package.vulkan ] ++
+      # this isn't really DRI, but we'll reuse this option for now
+      optional config.hardware.opengl.driSupport32Bit package32.vulkan;
+
+    environment.etc = {
+      "modprobe.d/blacklist-radeon.conf".source = package + "/etc/modprobe.d/blacklist-radeon.conf";
+      amd.source = package + "/etc/amd";
+    };
+
+  };
+
+}