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/applications/networking/omping/default.nix

@@ -0,0 +1,36 @@
+{ lib, stdenv, fetchFromGitHub, fetchpatch }:
+
+stdenv.mkDerivation rec {
+  pname = "omping";
+  version = "0.0.5";
+
+  src = fetchFromGitHub {
+    owner  = "troglobit";
+    repo   = "omping";
+    rev    = version;
+    sha256 = "1f0vsbnhxp7bbgdnfqshryx3nhz2sqdnxdj068s0nmzsh53ckbf7";
+  };
+
+  patches = [
+    # This can go in 0.0.6+
+    (fetchpatch {
+      url    = "https://github.com/troglobit/omping/commit/08a31ec1a6eb4e8f88c301ef679c3b6f9893f333.patch";
+      sha256 = "1xafyvd46bq53w2zvjw8bdw7vjqbrcrr21cyh6d0zfcn4gif1k0f";
+      name   = "fix_manpage_install.patch";
+    })
+  ];
+
+  makeFlags = [
+    "PREFIX=${placeholder "out"}"
+  ];
+
+  enableParallelBuilding = true;
+
+  meta = with lib; {
+    broken = stdenv.isDarwin;
+    description = "Open Multicast Ping (omping) is a tool for testing IPv4/IPv6 multicast connectivity on a LAN";
+    license = licenses.mit;
+    platforms = platforms.unix;
+    inherit (src.meta) homepage;
+  };
+}