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/misc/screensavers/physlock/default.nix

@@ -0,0 +1,27 @@
+{ lib, stdenv, fetchFromGitHub, pam, systemd }:
+
+stdenv.mkDerivation rec {
+  version = "13";
+  pname = "physlock";
+  src = fetchFromGitHub {
+    owner = "muennich";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "1mz4xxjip5ldiw9jgfq9zvqb6w10bcjfx6939w1appqg8f521a7s";
+  };
+
+  buildInputs = [ pam systemd ];
+
+  preConfigure = ''
+    substituteInPlace Makefile \
+      --replace "-m 4755 -o root -g root" ""
+  '';
+
+  makeFlags = [ "PREFIX=$(out)" "SESSION=systemd" ];
+
+  meta = with lib; {
+    description = "A secure suspend/hibernate-friendly alternative to `vlock -an`";
+    license = licenses.gpl2;
+    platforms = platforms.linux;
+  };
+}