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/servers/memcached/default.nix

@@ -0,0 +1,33 @@
+{lib, stdenv, fetchurl, cyrus_sasl, libevent, nixosTests }:
+
+stdenv.mkDerivation rec {
+  version = "1.6.15";
+  pname = "memcached";
+
+  src = fetchurl {
+    url = "https://memcached.org/files/${pname}-${version}.tar.gz";
+    sha256 = "sha256-jXq+PWSTeO27oW9C7x1myj8qwHXy65cUXOFkOI5u1RU=";
+  };
+
+  configureFlags = [
+     "ac_cv_c_endian=${if stdenv.hostPlatform.isBigEndian then "big" else "little"}"
+  ];
+
+  buildInputs = [cyrus_sasl libevent];
+
+  hardeningEnable = [ "pie" ];
+
+  NIX_CFLAGS_COMPILE = [ "-Wno-error=deprecated-declarations" ]
+    ++ lib.optional stdenv.isDarwin "-Wno-error";
+
+  meta = with lib; {
+    description = "A distributed memory object caching system";
+    homepage = "http://memcached.org/";
+    license = licenses.bsd3;
+    maintainers = [ maintainers.coconnor ];
+    platforms = platforms.linux ++ platforms.darwin;
+  };
+  passthru.tests = {
+    smoke-tests = nixosTests.memcached;
+  };
+}