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/travis/Gemfile.lock

@@ -0,0 +1,71 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    activesupport (5.2.4.3)
+      concurrent-ruby (~> 1.0, >= 1.0.2)
+      i18n (>= 0.7, < 2)
+      minitest (~> 5.1)
+      tzinfo (~> 1.1)
+    addressable (2.7.0)
+      public_suffix (>= 2.0.2, < 5.0)
+    coderay (1.1.3)
+    concurrent-ruby (1.1.6)
+    ethon (0.12.0)
+      ffi (>= 1.3.0)
+    faraday (1.0.1)
+      multipart-post (>= 1.2, < 3)
+    faraday_middleware (1.0.0)
+      faraday (~> 1.0)
+    ffi (1.13.1)
+    gh (0.17.0)
+      activesupport (~> 5.0)
+      addressable (~> 2.4)
+      faraday (~> 1.0)
+      faraday_middleware (~> 1.0)
+      multi_json (~> 1.0)
+      net-http-persistent (~> 2.9)
+      net-http-pipeline
+    highline (2.0.3)
+    i18n (1.8.3)
+      concurrent-ruby (~> 1.0)
+    json (2.3.0)
+    launchy (2.4.3)
+      addressable (~> 2.3)
+    method_source (0.9.2)
+    minitest (5.14.1)
+    multi_json (1.14.1)
+    multipart-post (2.1.1)
+    net-http-persistent (2.9.4)
+    net-http-pipeline (1.0.1)
+    pry (0.11.3)
+      coderay (~> 1.1.0)
+      method_source (~> 0.9.0)
+    public_suffix (4.0.5)
+    pusher-client (0.6.2)
+      json
+      websocket (~> 1.0)
+    thread_safe (0.3.6)
+    travis (1.9.1)
+      faraday (~> 1.0)
+      faraday_middleware (~> 1.0)
+      gh (~> 0.13)
+      highline (~> 2.0)
+      json (~> 2.3)
+      launchy (~> 2.1, < 2.5.0)
+      pusher-client (~> 0.4)
+      typhoeus (~> 0.6, >= 0.6.8)
+    typhoeus (0.8.0)
+      ethon (>= 0.8.0)
+    tzinfo (1.2.7)
+      thread_safe (~> 0.1)
+    websocket (1.2.8)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  pry (~> 0.11.0)
+  travis
+
+BUNDLED WITH
+   2.1.4