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/text/epubcheck/default.nix

@@ -0,0 +1,42 @@
+{ lib, stdenv, fetchzip
+, jre, makeWrapper }:
+
+stdenv.mkDerivation rec {
+  pname = "epubcheck";
+  version = "4.2.6";
+
+  src = fetchzip {
+    url = "https://github.com/w3c/epubcheck/releases/download/v${version}/epubcheck-${version}.zip";
+    sha256 = "sha256-f4r0ODKvZrl+YBcP2T9Z+zEuCyvQm9W7GNiLTr4p278=";
+  };
+
+  nativeBuildInputs = [ makeWrapper ];
+
+  dontBuild = true;
+
+  installPhase = ''
+    mkdir -p $out/lib
+    cp -r lib/* $out/lib
+
+    mkdir -p $out/libexec/epubcheck
+    cp epubcheck.jar $out/libexec/epubcheck
+
+    classpath=$out/libexec/epubcheck/epubcheck.jar
+    for jar in $out/lib/*.jar; do
+      classpath="$classpath:$jar"
+    done
+
+    mkdir -p $out/bin
+    makeWrapper ${jre}/bin/java $out/bin/epubcheck \
+      --add-flags "-classpath $classpath com.adobe.epubcheck.tool.Checker"
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/w3c/epubcheck";
+    description = "Validation tool for EPUB";
+    sourceProvenance = with sourceTypes; [ binaryBytecode ];
+    license = with licenses; [ asl20 bsd3 mpl10 w3c ];
+    platforms = platforms.all;
+    maintainers = with maintainers; [ eadwu ];
+  };
+}