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>

pkgs/os-specific/linux/ddcci/default.nix

@@ -0,0 +1,43 @@
+{ lib, stdenv, fetchFromGitLab, kernel }:
+
+stdenv.mkDerivation rec {
+  pname = "ddcci-driver";
+  version = "0.4.2";
+  name = "${pname}-${kernel.version}-${version}";
+
+  src = fetchFromGitLab {
+    owner = "${pname}-linux";
+    repo = "${pname}-linux";
+    rev = "v${version}";
+    sha256 = "sSmL8PqxqHHQiume62si/Kc9El58/b4wkB93iG0dnNM=";
+  };
+
+  hardeningDisable = [ "pic" ];
+
+  nativeBuildInputs = kernel.moduleBuildDependencies;
+
+  prePatch = ''
+    substituteInPlace ./ddcci/Makefile \
+      --replace '"$(src)"' '$(PWD)' \
+      --replace depmod \#
+    substituteInPlace ./ddcci-backlight/Makefile \
+      --replace '"$(src)"' '$(PWD)' \
+      --replace depmod \#
+  '';
+
+  makeFlags = kernel.makeFlags ++ [
+    "KDIR=${kernel.dev}/lib/modules/${kernel.modDirVersion}/build"
+    "KVER=${kernel.modDirVersion}"
+    "KERNEL_MODLIB=$(out)/lib/modules/${kernel.modDirVersion}"
+    "INCLUDEDIR=$(out)/include"
+  ];
+
+  meta = with lib; {
+    description = "Kernel module driver for DDC/CI monitors";
+    homepage = "https://gitlab.com/ddcci-driver-linux/ddcci-driver-linux";
+    license = licenses.gpl2Plus;
+    maintainers = with maintainers; [ ];
+    platforms = platforms.linux;
+    broken = kernel.kernelOlder "5.1";
+  };
+}