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/shells/scponly/default.nix

@@ -0,0 +1,40 @@
+{ stdenv, lib, fetchFromGitHub, openssh, debugLevel ? 0 }:
+
+stdenv.mkDerivation {
+  pname = "scponly";
+  version = "4.8";
+
+  src = fetchFromGitHub {
+    owner = "scponly";
+    repo = "scponly";
+    rev = "d8ca58257b9905186aa5706f35813d5f80ea07c1";
+    sha256 = "U0K7lOp18ytNjh3KVFmc6vL+/tG4ETnwLEPQEhM4lXE=";
+  };
+
+  patches = [ ./scponly-fix-make.patch ];
+
+  strictDeps = true;
+
+  # chroot doesn't seem to work, so not enabling
+  # rsync could also be optionally enabled
+  configureFlags = [
+    "--enable-winscp-compat"
+    "scponly_PROG_SFTP_SERVER=${lib.getBin openssh}/libexec/sftp-server"
+    "scponly_PROG_SCP=${lib.getBin openssh}/bin/scp"
+  ];
+
+  postInstall = lib.optionalString (debugLevel > 0) ''
+    mkdir -p $out/etc/scponly && echo ${
+      toString debugLevel
+    } > $out/etc/scponly/debuglevel
+  '';
+
+  passthru.shellPath = "/bin/scponly";
+
+  meta = with lib; {
+    description = "A shell that only permits scp and sftp-server";
+    homepage = "https://github.com/scponly/scponly";
+    license = with licenses; [ bsd2 ];
+    maintainers = with maintainers; [ wmertens ];
+  };
+}