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/misc/odyssey/default.nix

@@ -0,0 +1,29 @@
+{ lib, stdenv, fetchFromGitHub, cmake, openssl, postgresql }:
+
+stdenv.mkDerivation rec {
+  pname = "odyssey";
+  version = "1.2";
+
+  src = fetchFromGitHub {
+    owner = "yandex";
+    repo = pname;
+    rev = version;
+    sha256 = "sha256-wxENqB9CmRVsQY9jTPUlpdiXpuqoU/2hRCY41f9uH3A=";
+  };
+
+  nativeBuildInputs = [ cmake ];
+  buildInputs = [ openssl postgresql ];
+  cmakeFlags = [ "-DPQ_LIBRARY=${postgresql.lib}/lib" ];
+
+  installPhase = ''
+    install -Dm755 -t $out/bin sources/odyssey
+  '';
+
+  meta = with lib; {
+    description = "Scalable PostgreSQL connection pooler";
+    homepage = "https://github.com/yandex/odyssey";
+    license = licenses.bsd3;
+    maintainers = [ maintainers.marsam ];
+    platforms = [ "x86_64-linux" ];
+  };
+}