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/os-specific/linux/s6-linux-utils/default.nix

@@ -0,0 +1,32 @@
+{ lib, skawarePackages }:
+
+with skawarePackages;
+
+buildPackage {
+  pname = "s6-linux-utils";
+  version = "2.5.1.7";
+  sha256 = "1n6zmnczbybwcchkhg5zqixz8mdk5bfn0sxq0kxifgpi9ggw5a46";
+
+  description = "A set of minimalistic Linux-specific system utilities";
+  platforms = lib.platforms.linux;
+
+  outputs = [ "bin" "dev" "doc" "out" ];
+
+  # TODO: nsss support
+  configureFlags = [
+    "--bindir=\${bin}/bin"
+    "--includedir=\${dev}/include"
+    "--with-sysdeps=${skalibs.lib}/lib/skalibs/sysdeps"
+    "--with-include=${skalibs.dev}/include"
+    "--with-lib=${skalibs.lib}/lib"
+    "--with-dynlib=${skalibs.lib}/lib"
+  ];
+
+  postInstall = ''
+    # remove all s6 executables from build directory
+    rm $(find -name "s6-*" -type f -mindepth 1 -maxdepth 1 -executable)
+
+    mv doc $doc/share/doc/s6-linux-utils/html
+  '';
+
+}