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/data/icons/iso-flags/default.nix

@@ -0,0 +1,45 @@
+{ lib, stdenv
+, fetchFromGitHub
+, perl
+, inkscape
+, librsvg
+, targets ? [ "all" ]
+}:
+
+stdenv.mkDerivation {
+  pname = "iso-flags";
+  version = "unstable-18012020";
+
+  src = fetchFromGitHub {
+    owner = "joielechong";
+    repo = "iso-country-flags-svg-collection";
+    rev = "9ebbd577b9a70fbfd9a1931be80c66e0d2f31a9d";
+    sha256 = "17bm7w4md56xywixfvp7vr3d6ihvxk3383i9i4rpmgm6qa9dyxdl";
+  };
+
+  nativeBuildInputs = [
+    perl
+    inkscape
+    librsvg
+    (perl.withPackages(pp: with pp; [ JSON XMLLibXML ]))
+  ];
+
+  postPatch = ''
+    patchShebangs .
+  '';
+
+  buildFlags = targets;
+
+  installPhase = ''
+    mkdir -p $out/share
+    mv build $out/share/iso-flags
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/joielechong/iso-country-flags-svg-collection";
+    description = "248 country flag SVG & PNG icons with different icon styles";
+    license = [ licenses.publicDomain ];
+    platforms = platforms.linux; # the output assets should work anywhere, but unsure about the tools to build them...
+    maintainers = [ maintainers.mkg20001 ];
+  };
+}