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/ruby-modules/runtests.sh

@@ -0,0 +1,6 @@
+#!/usr/bin/env bash
+set -o xtrace
+cd $(dirname $0)
+find . -name text.nix
+testfiles=$(find . -name test.nix)
+nix-build -E "with import <nixpkgs> {}; callPackage testing/driver.nix { testFiles = [ $testfiles ]; }" --show-trace && cat result