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/akvcam/default.nix

@@ -0,0 +1,34 @@
+{ lib, stdenv, fetchFromGitHub, kernel }:
+
+stdenv.mkDerivation rec {
+  pname = "akvcam";
+  version = "1.2.2";
+
+  src = fetchFromGitHub {
+    owner = "webcamoid";
+    repo = "akvcam";
+    rev = version;
+    sha256 = "1f0vjia2d7zj3y5c63lx1r537bdjx6821yxy29ilbrvsbjq2szj8";
+  };
+  sourceRoot = "source/src";
+
+  nativeBuildInputs = kernel.moduleBuildDependencies;
+  makeFlags = kernel.makeFlags ++ [
+    "KERNEL_DIR=${kernel.dev}/lib/modules/${kernel.modDirVersion}/build"
+  ];
+
+  installPhase = ''
+    install -m644 -b -D akvcam.ko $out/lib/modules/${kernel.modDirVersion}/akvcam.ko
+  '';
+
+  enableParallelBuilding = true;
+
+  meta = with lib; {
+    description = "Virtual camera driver for Linux";
+    homepage = "https://github.com/webcamoid/akvcam";
+    maintainers = with maintainers; [ freezeboy ];
+    platforms = platforms.linux;
+    license = licenses.gpl2Only;
+    broken = kernel.kernelAtLeast "5.18";
+  };
+}