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/services/network-filesystems/openafs/lib.nix

@@ -0,0 +1,33 @@
+{ config, lib, ...}:
+
+let
+  inherit (lib) concatStringsSep mkOption types;
+
+in {
+
+  mkCellServDB = cellName: db: ''
+    >${cellName}
+  '' + (concatStringsSep "\n" (map (dbm: if (dbm.ip != "" && dbm.dnsname != "") then dbm.ip + " #" + dbm.dnsname else "")
+                                   db))
+     + "\n";
+
+  # CellServDB configuration type
+  cellServDBConfig = {
+    ip = mkOption {
+      type = types.str;
+      default = "";
+      example = "1.2.3.4";
+      description = "IP Address of a database server";
+    };
+    dnsname = mkOption {
+      type = types.str;
+      default = "";
+      example = "afs.example.org";
+      description = "DNS full-qualified domain name of a database server";
+    };
+  };
+
+  openafsMod = config.services.openafsClient.packages.module;
+  openafsBin = config.services.openafsClient.packages.programs;
+  openafsSrv = config.services.openafsServer.package;
+}