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/applications/graphics/image_optim/Gemfile.lock

@@ -0,0 +1,23 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    exifr (1.3.6)
+    fspath (3.1.0)
+    image_optim (0.26.3)
+      exifr (~> 1.2, >= 1.2.2)
+      fspath (~> 3.0)
+      image_size (>= 1.5, < 3)
+      in_threads (~> 1.3)
+      progress (~> 3.0, >= 3.0.1)
+    image_size (2.0.0)
+    in_threads (1.5.1)
+    progress (3.5.0)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  image_optim
+
+BUNDLED WITH
+   2.1.4