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/corundum/Gemfile.lock

@@ -0,0 +1,56 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    calibrate (0.0.1)
+    caliph (0.3.1)
+    corundum (0.6.2)
+      bundler (~> 1.10)
+      caliph (~> 0.3)
+      mattock (~> 0.9)
+      paint (~> 0.8)
+      rspec (>= 2.0, < 4)
+      simplecov (>= 0.5)
+      simplecov-json (~> 0.2)
+    diff-lcs (1.3)
+    docile (1.1.5)
+    json (2.1.0)
+    mattock (0.10.1)
+      calibrate (~> 0.0.1)
+      caliph (~> 0.3)
+      rake (~> 10.0)
+      tilt (> 0)
+      valise (~> 1.1)
+    paint (0.9.0)
+    rake (10.5.0)
+    rspec (3.6.0)
+      rspec-core (~> 3.6.0)
+      rspec-expectations (~> 3.6.0)
+      rspec-mocks (~> 3.6.0)
+    rspec-core (3.6.0)
+      rspec-support (~> 3.6.0)
+    rspec-expectations (3.6.0)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.6.0)
+    rspec-mocks (3.6.0)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.6.0)
+    rspec-support (3.6.0)
+    simplecov (0.14.1)
+      docile (~> 1.1.0)
+      json (>= 1.8, < 3)
+      simplecov-html (~> 0.10.0)
+    simplecov-html (0.10.1)
+    simplecov-json (0.2)
+      json
+      simplecov
+    tilt (2.0.7)
+    valise (1.2.1)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  corundum (= 0.6.2)
+
+BUNDLED WITH
+   2.1.4