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/isl/generic.nix

@@ -0,0 +1,34 @@
+{ version
+, urls
+, sha256
+, configureFlags ? []
+, patches ? []
+}:
+
+{ lib, stdenv, fetchurl, gmp
+}:
+
+stdenv.mkDerivation {
+  pname = "isl";
+  inherit version;
+
+  src = fetchurl {
+    inherit urls sha256;
+  };
+
+  inherit patches;
+
+  strictDeps = true;
+  buildInputs = [ gmp ];
+
+  inherit configureFlags;
+
+  enableParallelBuilding = true;
+
+  meta = {
+    homepage = "https://libisl.sourceforge.io/";
+    license = lib.licenses.lgpl21;
+    description = "A library for manipulating sets and relations of integer points bounded by linear constraints";
+    platforms = lib.platforms.all;
+  };
+}