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/misc/gnuk/generic.nix

@@ -0,0 +1,52 @@
+{ lib, stdenv, gcc-arm-embedded, binutils-arm-embedded, makeWrapper
+, python3Packages
+
+# Extra options
+, device ? "fsij", vid ? "234b", pid ? "0000"
+
+# Version specific options
+, version, src
+, ...
+}:
+
+stdenv.mkDerivation {
+  pname = "gnuk-${device}";
+
+  inherit version src;
+
+  nativeBuildInputs = [ gcc-arm-embedded binutils-arm-embedded makeWrapper ];
+  buildInputs = with python3Packages; [ python pyusb colorama ];
+
+  configurePhase = ''
+    cd src
+    patchShebangs configure
+    ./configure --vidpid=${vid}:${pid}
+  '';
+
+  installPhase = ''
+    mkdir -p $out/bin
+
+    find . -name gnuk.bin -exec cp {} $out \;
+
+    #sed -i 's,Exception as e,IOError as e,' ../tool/stlinkv2.py
+    sed -i ../tool/stlinkv2.py \
+      -e "1a import array" \
+      -e "s,\(data_received =\) (),\1 array.array('B'),g" \
+      -e "s,\(data_received\) = data_received + \(.*\),\1.extend(\2),g"
+    cp ../tool/stlinkv2.py $out/bin/stlinkv2
+    wrapProgram $out/bin/stlinkv2 --prefix PYTHONPATH : "$PYTHONPATH"
+
+    # Some useful helpers
+    echo "#! ${stdenv.shell} -e" | tee $out/bin/{unlock,flash}
+    echo "$out/bin/stlinkv2 -u \$@" >> $out/bin/unlock
+    echo "$out/bin/stlinkv2 -b \$@ $out/gnuk.bin" >> $out/bin/flash
+    chmod +x $out/bin/{unlock,flash}
+  '';
+
+  meta = with lib; {
+    homepage = "https://www.fsij.org/doc-gnuk/";
+    description = "An implementation of USB cryptographic token for gpg";
+    license = licenses.gpl3;
+    platforms = with platforms; linux;
+  };
+}