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/python-modules/kaldi-active-grammar/0004-fork-cmake.patch

@@ -0,0 +1,20 @@
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index ededc78b8..7ee1879a5 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -188,6 +188,7 @@ add_subdirectory(src/ivector)
+ add_subdirectory(src/online)
+ add_subdirectory(src/online2)
+ add_subdirectory(src/kws)
++add_subdirectory(src/dragonfly)
+ 
+ add_subdirectory(src/itf)
+ 
+@@ -219,6 +220,7 @@ add_subdirectory(src/ivectorbin)
+ add_subdirectory(src/onlinebin)
+ add_subdirectory(src/online2bin)
+ add_subdirectory(src/kwsbin)
++add_subdirectory(src/dragonflybin)
+ 
+ # add all cuda executables
+ if(CUDA_FOUND)