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/os-specific/linux/kernel/linux-zen.nix

@@ -0,0 +1,39 @@
+{ lib, fetchFromGitHub, buildLinux, ... } @ args:
+
+let
+  # having the full version string here makes it easier to update
+  modDirVersion = "5.18.1-zen1";
+  parts = lib.splitString "-" modDirVersion;
+  version = lib.elemAt parts 0;
+  suffix = lib.elemAt parts 1;
+
+  numbers = lib.splitString "." version;
+  branch = "${lib.elemAt numbers 0}.${lib.elemAt numbers 1}";
+  rev = if ((lib.elemAt numbers 2) == "0") then "v${branch}-${suffix}" else "v${modDirVersion}";
+in
+
+buildLinux (args // {
+  inherit version modDirVersion;
+  isZen = true;
+
+  src = fetchFromGitHub {
+    owner = "zen-kernel";
+    repo = "zen-kernel";
+    inherit rev;
+    sha256 = "sha256-LCLfLE85NifuskYl2dxLOJEsUNHLegF8ecYyU4xOCtY=";
+  };
+
+  structuredExtraConfig = with lib.kernel; {
+    ZEN_INTERACTIVE = yes;
+    # TODO: Remove once #175433 reaches master
+    # https://nixpk.gs/pr-tracker.html?pr=175433
+    WERROR = no;
+  };
+
+  extraMeta = {
+    inherit branch;
+    maintainers = with lib.maintainers; [ atemu andresilva ];
+    description = "Built using the best configuration and kernel sources for desktop, multimedia, and gaming workloads.";
+  };
+
+} // (args.argsOverride or { }))