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/test/config.nix

@@ -0,0 +1,24 @@
+{ lib, ... }:
+lib.recurseIntoAttrs {
+
+  # https://github.com/NixOS/nixpkgs/issues/175196
+  allowPkgsInPermittedInsecurePackages =
+    let pkgs = import ../.. {
+          config = {
+            permittedInsecurePackages =
+              tempAllow pkgs.authy "2.1.0" [ "electron-9.4.4" ];
+          };
+        };
+        # A simplification of `tempAllow` that doesn't check the version, but
+        # has the same strictness characteristics. Actually checking a version
+        # here would add undue maintenance.
+        #
+        # Original:
+        #     tempAllow = p: v: pa:
+        #       lib.optionals (lib.assertMsg (p.version == v) "${p.name} is no longer at version ${v}, consider removing the tempAllow") pa;
+        #
+        tempAllow = p: v: pa: builtins.seq v builtins.seq p.version pa;
+
+    in pkgs.hello;
+
+}