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/system/hwinfo/default.nix

@@ -0,0 +1,57 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+, flex
+, libuuid
+, libx86emu
+, perl
+}:
+
+stdenv.mkDerivation rec {
+  pname = "hwinfo";
+  version = "21.80";
+
+  src = fetchFromGitHub {
+    owner = "opensuse";
+    repo = "hwinfo";
+    rev = version;
+    sha256 = "sha256-T4ny1tq3IMtmeZRgcAOvu2O23XEiLeKRoqOxhuVGBRw=";
+  };
+
+  nativeBuildInputs = [
+    flex
+  ];
+
+  buildInputs = [
+    libuuid
+    libx86emu
+    perl
+  ];
+
+  postPatch = ''
+    # VERSION and changelog are usually generated using Git
+    # unless HWINFO_VERSION is defined (see Makefile)
+    export HWINFO_VERSION="${version}"
+    sed -i 's|^\(TARGETS\s*=.*\)\<changelog\>\(.*\)$|\1\2|g' Makefile
+
+    substituteInPlace Makefile --replace "/sbin" "/bin" --replace "/usr/" "/"
+    substituteInPlace src/isdn/cdb/Makefile --replace "lex isdn_cdb.lex" "flex isdn_cdb.lex"
+    substituteInPlace hwinfo.pc.in --replace "prefix=/usr" "prefix=$out"
+  '';
+
+  makeFlags = [
+    "LIBDIR=/lib"
+  ];
+
+  installFlags = [
+    "DESTDIR=$(out)"
+  ];
+
+  meta = with lib; {
+    description = "Hardware detection tool from openSUSE";
+    license = licenses.gpl2Only;
+    homepage = "https://github.com/openSUSE/hwinfo";
+    maintainers = with maintainers; [ bobvanderlinden ];
+    platforms = platforms.linux;
+  };
+}