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/video/kmplayer/no-docs.patch

@@ -0,0 +1,12 @@
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -79,9 +79,6 @@
+ 
+ add_subdirectory(src)
+ add_subdirectory(icons)
+-if (IS_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/doc" AND KF5DocTools_VERSION)
+-  add_subdirectory(doc)
+-endif(KF5DocTools_VERSION)
+ add_subdirectory(data)
+ 
+ if (IS_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/po")