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/fox/clang.patch

@@ -0,0 +1,13 @@
+diff --git a/src/FXReactor.cpp b/src/FXReactor.cpp
+index 1ecdb45..9058a30 100644
+--- a/src/FXReactor.cpp
++++ b/src/FXReactor.cpp
+@@ -452,7 +452,7 @@ FXint FXReactor::processActiveHandles(FXTime block,FXuint flags){
+     }
+ 
+   // Normal case
+-  if(0<=hand){
++  if(0==hand){
+ 
+     // Any handles active?
+     if(0<nhand){