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/arping/default.nix

@@ -0,0 +1,36 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+, autoreconfHook
+, libnet
+, libpcap
+}:
+
+stdenv.mkDerivation rec {
+  pname = "arping";
+  version = "2.23";
+
+  src = fetchFromGitHub {
+    owner = "ThomasHabets";
+    repo = pname;
+    rev = "${pname}-${version}";
+    hash = "sha256-Yn0EFb23VJvcVluQhwGHg9cdnZ8LKlBEds7cq8Irftc=";
+  };
+
+  nativeBuildInputs = [
+    autoreconfHook
+  ];
+
+  buildInputs = [
+    libnet
+    libpcap
+  ];
+
+  meta = with lib; {
+    description = "Broadcasts a who-has ARP packet on the network and prints answers";
+    homepage = "https://github.com/ThomasHabets/arping";
+    license = with licenses; [ gpl2Plus ];
+    maintainers = with maintainers; [ michalrus ];
+    platforms = platforms.unix;
+  };
+}