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/computing/slurm-spank-stunnel/default.nix

@@ -0,0 +1,31 @@
+{ lib, stdenv, fetchFromGitHub, slurm } :
+
+stdenv.mkDerivation rec {
+  pname = "slurm-spank-stunnel";
+  version = "0.2.2";
+
+  src = fetchFromGitHub {
+    owner = "stanford-rc";
+    repo = "slurm-spank-stunnel";
+    rev = version;
+    sha256 = "15cpd49ccvzsmmr3gk8svm2nz461rvs4ybczckyf4yla0xzp06gj";
+  };
+
+  buildPhase = ''
+    gcc -I${slurm.dev}/include -shared -fPIC -o stunnel.so slurm-spank-stunnel.c
+  '';
+
+  installPhase = ''
+    mkdir -p $out/lib $out/etc/slurm/plugstack.conf.d
+    install -m 755 stunnel.so $out/lib
+    install -m 644 plugstack.conf $out/etc/slurm/plugstack.conf.d/stunnel.conf.example
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/stanford-rc/slurm-spank-stunnel";
+    description = "Plugin for SLURM for SSH tunneling and port forwarding support";
+    platforms = platforms.linux;
+    license = licenses.gpl3Only;
+    maintainers = with maintainers; [ markuskowa ];
+  };
+}