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/compilers/haxe/setup-hook.sh

@@ -0,0 +1,7 @@
+addHaxeLibPath() {
+  if [ ! -d "$1/lib/haxe/std" ]; then
+    addToSearchPath HAXELIB_PATH "$1/lib/haxe"
+  fi
+}
+
+addEnvHooks "$targetOffset" addHaxeLibPath