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/development/perl-modules/expression-generator/retrieve-file-link.sh

@@ -0,0 +1,14 @@
+#! /bin/sh
+
+module_basename="$1";
+file_name="$2";
+
+version_regexp="${module_basename}(-[0-9.a-z]+){0,1}";
+author_regexp="[A-Z0-9]+";
+
+./retrieve-modulepage.sh "$module_basename" |
+    egrep "[<]a href=\"[a-z0-9/]*/(${author_regexp}/){0,1}${version_regexp}/${file_name}" |
+    sed -re "s@.*href=\"@@; s@\".*@@" |
+    sed -re 's@^/@http://search.cpan.org/@';
+
+echo "$link_line";