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/tools/networking/ipv6calc/default.nix

@@ -0,0 +1,71 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+, getopt
+, ip2location-c
+, openssl
+, perl
+, libmaxminddb ? null
+, geolite-legacy ? null
+}:
+
+stdenv.mkDerivation rec {
+  pname = "ipv6calc";
+  version = "4.0.1";
+
+  src = fetchFromGitHub {
+    owner = "pbiering";
+    repo = pname;
+    rev = version;
+    sha256 = "sha256-mfJ6ADjGjECyoW5ELnUzXiJHHiwEDHzeOKCGSmGnLno=";
+  };
+
+  buildInputs = [
+    libmaxminddb
+    geolite-legacy
+    getopt
+    ip2location-c
+    openssl
+    perl
+  ];
+
+  postPatch = ''
+    patchShebangs *.sh */*.sh
+    for i in {,databases/}lib/Makefile.in; do
+      substituteInPlace $i --replace "/sbin/ldconfig" "ldconfig"
+    done
+  '';
+
+  configureFlags = [
+    "--prefix=${placeholder "out"}"
+    "--libdir=${placeholder "out"}/lib"
+    "--disable-bundled-getopt"
+    "--disable-bundled-md5"
+    "--disable-dynamic-load"
+    "--enable-shared"
+  ] ++ lib.optional (libmaxminddb != null) [
+    "--enable-mmdb"
+  ] ++ lib.optional (geolite-legacy != null) [
+    "--with-geoip-db=${geolite-legacy}/share/GeoIP"
+  ] ++ lib.optional (ip2location-c != null) [
+    "--enable-ip2location"
+  ];
+
+  enableParallelBuilding = true;
+
+  meta = with lib; {
+    description = "Calculate/manipulate (not only) IPv6 addresses";
+    longDescription = ''
+      ipv6calc is a small utility to manipulate (not only) IPv6 addresses and
+      is able to do other tricky things. Intentions were convering a given
+      IPv6 address into compressed format, convering a given IPv6 address into
+      the same format like shown in /proc/net/if_inet6 and (because it was not
+      difficult) migrating the Perl program ip6_int into.
+      Now only one utiltity is needed to do a lot.
+    '';
+    homepage = "http://www.deepspace6.net/projects/ipv6calc.html";
+    license = licenses.gpl2Only;
+    maintainers = with maintainers; [ ];
+    platforms = platforms.linux;
+  };
+}