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/tools/misc/bash_unit/default.nix

@@ -0,0 +1,27 @@
+{ fetchFromGitHub
+, lib, stdenv
+}:
+
+stdenv.mkDerivation rec {
+  pname = "bash_unit";
+  version = "1.9.1";
+
+  src = fetchFromGitHub {
+    owner = "pgrange";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "sha256-TtpVldIAqyv+apXmbI+1L0NgZxoKdc6Ffrl4WOqRI9c=";
+  };
+
+  installPhase = ''
+    mkdir -p $out/bin
+    cp bash_unit $out/bin/
+  '';
+
+  meta = with lib; {
+    description = "Bash unit testing enterprise edition framework for professionals";
+    maintainers = with maintainers; [ pamplemousse ];
+    platforms = platforms.all;
+    license = licenses.gpl3Plus;
+  };
+}