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>

nixos/lib/make-options-doc/sortXML.py

@@ -0,0 +1,27 @@
+import xml.etree.ElementTree as ET
+import sys
+
+tree = ET.parse(sys.argv[1])
+# the xml tree is of the form
+# <expr><list> {all options, each an attrs} </list></expr>
+options = list(tree.getroot().find('list'))
+
+def sortKey(opt):
+    def order(s):
+        if s.startswith("enable"):
+            return 0
+        if s.startswith("package"):
+            return 1
+        return 2
+
+    return [
+        (order(p.attrib['value']), p.attrib['value'])
+        for p in opt.findall('attr[@name="loc"]/list/string')
+    ]
+
+options.sort(key=sortKey)
+
+doc = ET.Element("expr")
+newOptions = ET.SubElement(doc, "list")
+newOptions.extend(options)
+ET.ElementTree(doc).write(sys.argv[2], encoding='utf-8')