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/fonts/fira-code/symbols.nix

@@ -0,0 +1,26 @@
+{ lib, fetchzip }:
+
+fetchzip {
+  name = "fira-code-symbols-20160811";
+
+  url = "https://github.com/tonsky/FiraCode/files/412440/FiraCode-Regular-Symbol.zip";
+
+  postFetch = ''
+    mkdir -p $out/share/fonts
+    unzip -j $downloadedFile -d $out/share/fonts/opentype
+  '';
+
+  sha256 = "19krsp22rin74ix0i19v4bh1c965g18xkmz1n55h6n6qimisnbkm";
+
+  meta = with lib; {
+    description = "FiraCode unicode ligature glyphs in private use area";
+    longDescription = ''
+      FiraCode uses ligatures, which some editors don’t support.
+      This addition adds them as glyphs to the private unicode use area.
+      See https://github.com/tonsky/FiraCode/issues/211.
+    '';
+    license = licenses.ofl;
+    maintainers = [ maintainers.Profpatsch ];
+    homepage = "https://github.com/tonsky/FiraCode/issues/211#issuecomment-239058632";
+  };
+}