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/documentation-highlighter/update.sh

@@ -0,0 +1,42 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash -p curl -p unzip
+
+set -eu
+set -o pipefail
+
+root=$(pwd)
+
+if [ ! -f "./update.sh" ]; then
+    echo "Please run this script from within pkgs/misc/documentation-highlighter/!"
+    exit 1
+fi
+
+scratch=$(mktemp -d -t tmp.XXXXXXXXXX)
+function finish {
+  rm -rf "$scratch"
+}
+trap finish EXIT
+
+
+mkdir $scratch/src
+cd $scratch/src
+
+token=$(curl https://highlightjs.org/download/ -c "$scratch/jar" \
+    | grep csrf \
+    | cut -d"'" -f6)
+
+curl --header "Referer: https://highlightjs.org/download/"\
+    -b "$scratch/jar" \
+    --data "csrfmiddlewaretoken=$token&nix.js=on&bash.js=on" \
+    https://highlightjs.org/download/ > $scratch/out.zip
+
+unzip "$scratch/out.zip"
+out="$root/"
+mkdir -p "$out"
+cp ./{highlight.pack.js,LICENSE,styles/mono-blue.css} "$out"
+
+(
+    echo "This file was generated with pkgs/misc/documentation-highlighter/update.sh"
+    echo ""
+    cat README.md
+) > "$out/README.md"