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/build-support/dotnet/dotnetenv/wrapper.nix

@@ -0,0 +1,64 @@
+{dotnetenv}:
+
+{ name
+, src
+, baseDir ? "."
+, slnFile
+, targets ? "ReBuild"
+, verbosity ? "detailed"
+, options ? "/p:Configuration=Debug;Platform=Win32"
+, assemblyInputs ? []
+, preBuild ? ""
+, namespace
+, mainClassName
+, mainClassFile
+, modifyPublicMain ? true
+}:
+
+let
+  application = dotnetenv.buildSolution {
+    inherit name src baseDir slnFile targets verbosity;
+    inherit options assemblyInputs preBuild;
+    inherit modifyPublicMain mainClassFile;
+  };
+in
+dotnetenv.buildSolution {
+  name = "${name}-wrapper";
+  src = ./Wrapper;
+  slnFile = "Wrapper.sln";
+  assemblyInputs = [ application ];
+  preBuild = ''
+    addRuntimeDeps()
+    {
+	if [ -f $1/nix-support/dotnet-assemblies ]
+	then
+	    for i in $(cat $1/nix-support/dotnet-assemblies)
+	    do
+		windowsPath=$(cygpath --windows $i | sed 's|\\|\\\\|g')
+		assemblySearchArray="$assemblySearchArray @\"$windowsPath\""
+
+		addRuntimeDeps $i
+	    done
+	fi
+    }
+
+    export exePath=$(cygpath --windows $(find ${application} -name \*.exe) | sed 's|\\|\\\\|g')
+
+    # Generate assemblySearchPaths string array contents
+    for path in ${toString assemblyInputs}
+    do
+        assemblySearchArray="$assemblySearchArray @\"$(cygpath --windows $path | sed 's|\\|\\\\|g')\", "
+	addRuntimeDeps $path
+    done
+
+    sed -e "s|@ROOTNAMESPACE@|${namespace}Wrapper|" \
+        -e "s|@ASSEMBLYNAME@|${namespace}|" \
+        Wrapper/Wrapper.csproj.in > Wrapper/Wrapper.csproj
+
+    sed -e "s|@NAMESPACE@|${namespace}|g" \
+        -e "s|@MAINCLASSNAME@|${mainClassName}|g" \
+	-e "s|@EXEPATH@|$exePath|g" \
+	-e "s|@ASSEMBLYSEARCHPATH@|$assemblySearchArray|" \
+        Wrapper/Wrapper.cs.in > Wrapper/Wrapper.cs
+  '';
+}