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/tools/misc/watson-ruby/Gemfile.lock

@@ -0,0 +1,15 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    json (2.1.0)
+    watson-ruby (1.6.3)
+      json
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  watson-ruby
+
+BUNDLED WITH
+   2.1.4