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/db/db-4.8.nix

@@ -0,0 +1,10 @@
+{ lib, stdenv, fetchurl, ... } @ args:
+
+import ./generic.nix (args // {
+  version = "4.8.30";
+  sha256 = "0ampbl2f0hb1nix195kz1syrqqxpmvnvnfvphambj7xjrl3iljg0";
+  extraPatches = [ ./clang-4.8.patch ./CVE-2017-10140-4.8-cwd-db_config.patch ];
+
+  drvArgs.hardeningDisable = [ "format" ];
+  drvArgs.doCheck = false;
+})