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/chrony/default.nix

@@ -0,0 +1,50 @@
+{ lib, stdenv, fetchurl, pkg-config, libcap, readline, texinfo, nss, nspr
+, libseccomp, pps-tools, gnutls }:
+
+assert stdenv.isLinux -> libcap != null;
+
+stdenv.mkDerivation rec {
+  pname = "chrony";
+  version = "4.2";
+
+  src = fetchurl {
+    url = "https://download.tuxfamily.org/chrony/${pname}-${version}.tar.gz";
+    sha256 = "sha256-Jz+f0Vwyjtbzpfa6a67DWkIaNKc7tyVgUymxcSBI25o=";
+  };
+
+  postPatch = ''
+    patchShebangs test
+  '';
+
+  buildInputs = [ readline texinfo nss nspr gnutls ]
+    ++ lib.optionals stdenv.isLinux [ libcap libseccomp pps-tools ];
+  nativeBuildInputs = [ pkg-config ];
+
+  hardeningEnable = [ "pie" ];
+
+  configureFlags = [ "--chronyvardir=$(out)/var/lib/chrony" "--enable-ntp-signd" ]
+    ++ lib.optional stdenv.isLinux "--enable-scfilter";
+
+  meta = with lib; {
+    description = "Sets your computer's clock from time servers on the Net";
+    homepage = "https://chrony.tuxfamily.org/";
+    license = licenses.gpl2;
+    platforms = with platforms; linux ++ freebsd ++ openbsd;
+    maintainers = with maintainers; [ fpletz thoughtpolice ];
+
+    longDescription = ''
+      Chronyd is a daemon which runs in background on the system. It obtains
+      measurements via the network of the system clock’s offset relative to
+      time servers on other systems and adjusts the system time accordingly.
+      For isolated systems, the user can periodically enter the correct time by
+      hand (using Chronyc). In either case, Chronyd determines the rate at
+      which the computer gains or loses time, and compensates for this. Chronyd
+      implements the NTP protocol and can act as either a client or a server.
+
+      Chronyc provides a user interface to Chronyd for monitoring its
+      performance and configuring various settings. It can do so while running
+      on the same computer as the Chronyd instance it is controlling or a
+      different computer.
+    '';
+  };
+}