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/servers/brickd/default.nix

@@ -0,0 +1,62 @@
+{ lib, stdenv, fetchFromGitHub, libusb1, pkg-config, pmutils, udev} :
+
+let
+  version = "2.1.1";
+  daemonlib = fetchFromGitHub {
+    owner = "Tinkerforge";
+    repo = "daemonlib";
+    rev = "brickd-${version}";
+    sha256 = "sha256-0HhuC4r1S4NJa2FSJa7+fNCfcoRTBckikYbGSE+2FbE=";
+  };
+in
+
+stdenv.mkDerivation {
+  pname = "brickd";
+  inherit version;
+
+  src = fetchFromGitHub {
+    owner = "Tinkerforge";
+    repo = "brickd";
+    rev = "v${version}";
+    sha256 = "sha256-6w2Ew+dLMmdRf9CF3TdKHa0d5ZgmX5lKIR+5t3QAWFQ=";
+  };
+
+  nativeBuildInputs = [ pkg-config ];
+  buildInputs = [ libusb1 pmutils udev ];
+
+  # shell thing didn't work so i replaced it using nix
+  prePatch = ''
+    substituteInPlace src/brickd/Makefile --replace 'PKG_CONFIG := $(shell which pkg-config 2> /dev/null)' "PKG_CONFIG := $pkgconfig/bin/pkg_config";
+  '';
+
+  buildPhase = ''
+    export
+    # build the brickd binary
+    mkdir src/daemonlib
+    cp -r ${daemonlib}/* src/daemonlib
+    cd src/brickd
+    make
+
+    # build and execute the unit tests
+    cd ../tests
+    make
+    for i in array_test base58_test node_test putenv_test queue_test sha1_test; do
+      echo "running unit test $i:"
+      ./$i
+    done
+  '';
+
+  installPhase = ''
+    cd ../brickd
+    mkdir -p $out/bin
+    cp brickd $out/bin/brickd
+  '';
+
+  meta = {
+    homepage = "https://www.tinkerforge.com/";
+    description = "A daemon (or service on Windows) that acts as a bridge between the Bricks/Bricklets and the API bindings for the different programming languages";
+    maintainers = [ lib.maintainers.qknight ];
+    license = lib.licenses.gpl2;
+    platforms = lib.platforms.all;
+  };
+}