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/evdi/default.nix

@@ -0,0 +1,40 @@
+{ lib, stdenv, fetchFromGitHub, kernel, libdrm }:
+
+stdenv.mkDerivation rec {
+  pname = "evdi";
+  version = "1.10.1";
+
+  src = fetchFromGitHub {
+    owner = "DisplayLink";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "sha256-XABpC2g4/e6/2HsHzrBUs6OW1lzgGBYlFAatVcA/vD8=";
+  };
+
+  NIX_CFLAGS_COMPILE = "-Wno-error -Wno-error=sign-compare";
+
+  nativeBuildInputs = kernel.moduleBuildDependencies;
+
+  buildInputs = [ kernel libdrm ];
+
+  makeFlags = kernel.makeFlags ++ [
+    "KVER=${kernel.modDirVersion}"
+    "KDIR=${kernel.dev}/lib/modules/${kernel.modDirVersion}/build"
+  ];
+
+  hardeningDisable = [ "format" "pic" "fortify" ];
+
+  installPhase = ''
+    install -Dm755 module/evdi.ko $out/lib/modules/${kernel.modDirVersion}/kernel/drivers/gpu/drm/evdi/evdi.ko
+    install -Dm755 library/libevdi.so $out/lib/libevdi.so
+  '';
+
+  meta = with lib; {
+    description = "Extensible Virtual Display Interface";
+    maintainers = with maintainers; [ eyjhb ];
+    platforms = platforms.linux;
+    license = with licenses; [ lgpl21Only gpl2Only ];
+    homepage = "https://www.displaylink.com/";
+    broken = kernel.kernelOlder "4.19" || stdenv.isAarch64;
+  };
+}