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/tools/misc/calamares-nixos-extensions/default.nix

@@ -0,0 +1,30 @@
+{ stdenv, fetchFromGitHub, lib }:
+
+stdenv.mkDerivation rec {
+  pname = "calamares-nixos-extensions";
+  version = "0.3.8";
+
+  src = fetchFromGitHub {
+    owner = "NixOS";
+    repo = "calamares-nixos-extensions";
+    rev = version;
+    sha256 = "MtqAOwlY5euVNAGRl2pRkbg/OolJPNOSQcR4DS5gFz4=";
+  };
+
+  installPhase = ''
+    runHook preInstall
+    mkdir -p $out/{lib,share}/calamares
+    cp -r modules $out/lib/calamares/
+    cp -r config/* $out/share/calamares/
+    cp -r branding $out/share/calamares/
+    runHook postInstall
+  '';
+
+  meta = with lib; {
+    description = "Calamares modules for NixOS";
+    homepage = "https://github.com/NixOS/calamares-nixos-extensions";
+    license = with licenses; [ gpl3Plus bsd2 cc-by-40 cc-by-sa-40 cc0 ];
+    maintainers = with maintainers; [ vlinkz ];
+    platforms = platforms.linux;
+  };
+}