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/common-updater/scripts.nix

@@ -0,0 +1,18 @@
+{ lib, stdenv, makeWrapper, coreutils, gnused, gnugrep, diffutils, nix, git, jq }:
+
+stdenv.mkDerivation {
+  name = "common-updater-scripts";
+
+  nativeBuildInputs = [ makeWrapper ];
+
+  dontUnpack = true;
+
+  installPhase = ''
+    mkdir -p $out/bin
+    cp ${./scripts}/* $out/bin
+
+    for f in $out/bin/*; do
+      wrapProgram $f --prefix PATH : ${lib.makeBinPath [ coreutils gnused gnugrep nix diffutils git jq ]}
+    done
+  '';
+}