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/games/xboard/default.nix

@@ -0,0 +1,68 @@
+{ lib
+, stdenv
+, fetchurl
+, fetchpatch
+, libX11
+, xorgproto
+, libXt
+, libXaw
+, libSM
+, libICE
+, libXmu
+, libXext
+, gnuchess
+, texinfo
+, libXpm
+, pkg-config
+, librsvg
+, cairo
+, pango
+, gtk2
+}:
+
+stdenv.mkDerivation rec {
+  pname = "xboard";
+  version = "4.9.1";
+
+  src = fetchurl {
+    url = "mirror://gnu/xboard/xboard-${version}.tar.gz";
+    sha256 = "sha256-Ky5T6EKK2bbo3IpVs6UYM4GRGk2uLABy+pYpa7sZcNY=";
+  };
+
+  patches = [
+    # Pull patch pending upstream inclusion for -fno-common toolchain support:
+    #   https://savannah.gnu.org/patch/index.php?10211
+    (fetchpatch {
+      name = "fno-common.patch";
+      url = "https://savannah.gnu.org/patch/download.php?file_id=53275";
+      sha256 = "sha256-ZOo9jAy1plFjhC5HXJQvXL+Zf7FL14asV3G4AwfgqTY=";
+    })
+  ];
+
+  buildInputs = [
+    libX11
+    xorgproto
+    libXt
+    libXaw
+    libSM
+    libICE
+    libXmu
+    libXext
+    gnuchess
+    texinfo
+    libXpm
+    pkg-config
+    librsvg
+    cairo
+    pango
+    gtk2
+  ];
+
+  meta = with lib; {
+    description = "GUI for chess engines";
+    homepage = "https://www.gnu.org/software/xboard/";
+    maintainers = with maintainers; [ raskin ];
+    platforms = platforms.unix;
+    license = licenses.gpl3Plus;
+  };
+}