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/envypn-font/default.nix

@@ -0,0 +1,40 @@
+{ lib, stdenv, fetchurl, libfaketime
+, fonttosfnt, mkfontscale
+}:
+
+stdenv.mkDerivation {
+  name = "envypn-font-1.7.1";
+
+  src = fetchurl {
+    url = "https://ywstd.fr/files/p/envypn-font/envypn-font-1.7.1.tar.gz";
+    sha256 = "bda67b6bc6d5d871a4d46565d4126729dfb8a0de9611dae6c68132a7b7db1270";
+  };
+
+  nativeBuildInputs = [ libfaketime fonttosfnt mkfontscale ];
+
+  unpackPhase = ''
+    tar -xzf $src --strip-components=1
+  '';
+
+  buildPhase = ''
+    # convert pcf fonts to otb
+    for i in *e.pcf.gz; do
+      faketime -f "1970-01-01 00:00:01" \
+      fonttosfnt -v -o "$(basename "$i" .pcf.gz)".otb "$i"
+    done
+  '';
+
+  installPhase = ''
+    install -D -m 644 -t "$out/share/fonts/misc" *.otb *.pcf.gz
+    mkfontdir "$out/share/fonts/misc"
+  '';
+
+  meta = with lib; {
+    description = ''
+      Readable bitmap font inspired by Envy Code R
+    '';
+    homepage = "http://ywstd.fr/p/pj/#envypn";
+    license = licenses.miros;
+    platforms = platforms.all;
+  };
+}