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/development/libraries/signond/default.nix

@@ -0,0 +1,30 @@
+{ mkDerivation, lib, fetchFromGitLab, qmake, doxygen }:
+
+mkDerivation rec {
+  pname = "signond";
+  version = "8.61";
+
+  src = fetchFromGitLab {
+    owner = "accounts-sso";
+    repo = pname;
+    rev = "VERSION_${version}";
+    sha256 = "sha256-d7JZmGpjIvSN9l1nvKbBZjF0OR5L5frPTGHF/pNEqHE=";
+  };
+
+  nativeBuildInputs = [
+    qmake
+    doxygen
+  ];
+
+  preConfigure = ''
+    substituteInPlace src/signond/signond.pro \
+      --replace "/etc" "@out@/etc"
+  '';
+
+  meta = with lib; {
+    homepage = "https://gitlab.com/accounts-sso/signond";
+    description = "Signon Daemon for Qt";
+    maintainers = with maintainers; [ freezeboy  ];
+    platforms = platforms.linux;
+  };
+}