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/libraries/opencv/no-build-info.patch

@@ -0,0 +1,14 @@
+diff -ru -x '*~' opencv-2.4.13-orig/modules/core/src/system.cpp opencv-2.4.13/modules/core/src/system.cpp
+--- opencv-2.4.13-orig/modules/core/src/system.cpp	1970-01-01 01:00:01.000000000 +0100
++++ opencv-2.4.13/modules/core/src/system.cpp	2016-10-02 18:44:53.674181762 +0200
+@@ -442,9 +442,7 @@
+ 
+ const std::string& getBuildInformation()
+ {
+-    static std::string build_info =
+-#include "version_string.inc"
+-    ;
++    static std::string build_info = "(build info elided)";
+     return build_info;
+ }
+