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/tools/security/chipsec/default.nix

@@ -0,0 +1,73 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+, kernel ? null
+, libelf
+, nasm
+, python3
+, withDriver ? false
+}:
+
+python3.pkgs.buildPythonApplication rec {
+  pname = "chipsec";
+  version = "1.8.1";
+
+  disabled = !stdenv.isLinux;
+
+  src = fetchFromGitHub {
+    owner = "chipsec";
+    repo = "chipsec";
+    rev = version;
+    hash = "sha256-bK8wlwhP0pi8rOs8ysbSZ+0aZOaX4mckfH/p4OLGnes=";
+  };
+
+  patches = lib.optionals withDriver [ ./ko-path.diff ./compile-ko.diff ];
+
+  KSRC = lib.optionalString withDriver "${kernel.dev}/lib/modules/${kernel.modDirVersion}/build";
+
+  nativeBuildInputs = [
+    libelf
+    nasm
+  ];
+
+  checkInputs = with python3.pkgs; [
+    distro
+    pytestCheckHook
+  ];
+
+  preBuild = lib.optionalString withDriver ''
+    export CHIPSEC_BUILD_LIB=$(mktemp -d)
+    mkdir -p $CHIPSEC_BUILD_LIB/chipsec/helper/linux
+  '';
+
+  preInstall = lib.optionalString withDriver ''
+    mkdir -p $out/${python3.pkgs.python.sitePackages}/drivers/linux
+    mv $CHIPSEC_BUILD_LIB/chipsec/helper/linux/chipsec.ko \
+      $out/${python3.pkgs.python.sitePackages}/drivers/linux/chipsec.ko
+  '';
+
+  setupPyBuildFlags = [
+    "--build-lib=$CHIPSEC_BUILD_LIB"
+  ] ++ lib.optional (!withDriver) [
+    "--skip-driver"
+  ];
+
+  pythonImportsCheck = [
+    "chipsec"
+  ];
+
+  meta = with lib; {
+    description = "Platform Security Assessment Framework";
+    longDescription = ''
+      CHIPSEC is a framework for analyzing the security of PC platforms
+      including hardware, system firmware (BIOS/UEFI), and platform components.
+      It includes a security test suite, tools for accessing various low level
+      interfaces, and forensic capabilities. It can be run on Windows, Linux,
+      Mac OS X and UEFI shell.
+    '';
+    license = licenses.gpl2Only;
+    homepage = "https://github.com/chipsec/chipsec";
+    maintainers = with maintainers; [ johnazoidberg ];
+    platforms = [ "x86_64-linux" ] ++ lib.optional (!withDriver) "x86_64-darwin";
+  };
+}