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/umlet/default.nix

@@ -0,0 +1,54 @@
+{ lib, stdenv, fetchurl, jre, unzip, runtimeShell }:
+
+let
+  major = "15";
+  minor = "0";
+  patch = "0";
+in stdenv.mkDerivation rec {
+  pname = "umlet";
+  version = "${major}.${minor}.${patch}";
+
+  src = fetchurl {
+    url = "https://www.umlet.com/umlet_${major}_${minor}/umlet-standalone-${version}.zip";
+    sha256 = "sha256-gdvhqYGyrFuQhhrkF26wXb3TQLRCLm59/uSxTPmHdAE=";
+  };
+
+  nativeBuildInputs = [ unzip ];
+
+  installPhase = ''
+    mkdir -p "$out/bin"
+    mkdir -p "$out/lib"
+
+    cp -R * "$out/lib"
+
+    cat > "$out/bin/umlet" << EOF
+    #!${runtimeShell}
+
+    programDir="$out/lib"
+    cd "\$programDir"
+    if [ \$# -eq 1 ]
+     then "${jre}/bin/java" -jar "\$programDir/umlet.jar" -filename="\$1"
+     else "${jre}/bin/java" -jar "\$programDir/umlet.jar" "\$@"
+    fi
+
+    EOF
+    chmod a+x "$out/bin/umlet"
+  '';
+
+  meta = with lib; {
+    description = "Free, open-source UML tool with a simple user interface";
+    longDescription = ''
+      UMLet is a free, open-source UML tool with a simple user interface:
+      draw UML diagrams fast, produce sequence and activity diagrams from
+      plain text, export diagrams to eps, pdf, jpg, svg, and clipboard,
+      share diagrams using Eclipse, and create new, custom UML elements.
+      UMLet runs stand-alone or as Eclipse plug-in on Windows, macOS and
+      Linux.
+    '';
+    homepage = "https://www.umlet.com";
+    sourceProvenance = with sourceTypes; [ binaryBytecode ];
+    license = licenses.gpl3;
+    maintainers = with maintainers; [ oxzi ];
+    platforms = platforms.all;
+  };
+}