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/text/ruby-zoom/Gemfile.lock

@@ -0,0 +1,24 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    djinni (2.2.4)
+      fagin (~> 1.2, >= 1.2.1)
+    fagin (1.2.1)
+    hilighter (1.2.3)
+    json_config (1.1.0)
+    ruby-zoom (5.3.0)
+      djinni (~> 2.2, >= 2.2.4)
+      fagin (~> 1.2, >= 1.2.1)
+      hilighter (~> 1.2, >= 1.2.3)
+      json_config (~> 1.0, >= 1.0.0)
+      scoobydoo (~> 1.0, >= 1.0.0)
+    scoobydoo (1.0.0)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  ruby-zoom
+
+BUNDLED WITH
+   1.17.2