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/misc/chafa/default.nix

@@ -0,0 +1,48 @@
+{ lib, stdenv, fetchFromGitHub, autoconf, automake, libtool, pkg-config, which
+, libxslt, libxml2, docbook_xml_dtd_412, docbook_xsl, glib, imagemagick
+, Foundation
+}:
+
+stdenv.mkDerivation rec {
+  version = "1.8.0";
+  pname = "chafa";
+
+  src = fetchFromGitHub {
+    owner = "hpjansson";
+    repo = "chafa";
+    rev = version;
+    sha256 = "sha256-8ENPmcl0KVxoBu8FGOGk+y8XsONWW0YW32MHAKBUiPE=";
+  };
+
+  nativeBuildInputs = [ autoconf
+                        automake
+                        libtool
+                        pkg-config
+                        which
+                        libxslt
+                        libxml2
+                        docbook_xml_dtd_412
+                        docbook_xsl
+                      ];
+
+  buildInputs = [ glib imagemagick ]
+    ++ lib.optional stdenv.isDarwin Foundation;
+
+  patches = [ ./xmlcatalog_patch.patch ];
+
+  preConfigure = ''
+    ./autogen.sh
+  '';
+
+  configureFlags = [ "--enable-man"
+                     "--with-xml-catalog=${docbook_xml_dtd_412}/xml/dtd/docbook/catalog.xml"
+                   ];
+
+  meta = with lib; {
+    description = "Terminal graphics for the 21st century";
+    homepage = "https://hpjansson.org/chafa/";
+    license = licenses.lgpl3Plus;
+    platforms = platforms.all;
+    maintainers = [ maintainers.mog ];
+  };
+}