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/chicken/5/fetchegg/builder.sh

@@ -0,0 +1,10 @@
+source $stdenv/setup
+
+header "exporting egg ${eggName} (version $version) into $out"
+
+mkdir -p $out
+CHICKEN_EGG_CACHE=. chicken-install -r "${eggName}:${version}"
+rm ${eggName}/{STATUS,TIMESTAMP}
+cp -r ${eggName}/* $out/
+
+stopNest