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/data/misc/dns-root-data/update-root-key.sh

@@ -0,0 +1,10 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash -p busybox unbound
+
+TMP=`mktemp`
+unbound-anchor -a "$TMP"
+grep -Ev "^($$|;)" "$TMP" | sed -e 's/ ;;.*//' > root.key
+
+unbound-anchor -F -a "$TMP"
+sed '/^;/d' < "$TMP" > root.ds
+rm $TMP