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>

nixos/modules/hardware/mcelog.nix

@@ -0,0 +1,35 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+{
+  meta.maintainers = with maintainers; [ grahamc ];
+  options = {
+
+    hardware.mcelog = {
+      enable = mkOption {
+        type = types.bool;
+        default = false;
+        description = ''
+          Enable the Machine Check Exception logger.
+        '';
+      };
+    };
+
+  };
+
+  config = mkIf config.hardware.mcelog.enable {
+    systemd = {
+      packages = [ pkgs.mcelog ];
+
+      services.mcelog = {
+        wantedBy = [ "multi-user.target" ];
+        serviceConfig = {
+          ProtectHome = true;
+          PrivateNetwork = true;
+          PrivateTmp = true;
+        };
+      };
+    };
+  };
+}