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/efont-unicode/default.nix

@@ -0,0 +1,54 @@
+{ lib, stdenv, fetchzip, libfaketime, xorg }:
+
+stdenv.mkDerivation rec {
+  pname = "efont-unicode";
+  version = "0.4.2";
+
+  src = fetchzip {
+    url = "http://openlab.ring.gr.jp/efont/dist/unicode-bdf/${pname}-bdf-${version}.tar.bz2";
+    sha256 = "0bib3jgikq8s1m96imw4mlgbl5cbq1bs5sqig74s2l2cdfx3jaqc";
+  };
+
+  nativeBuildInputs = with xorg;
+    [ libfaketime bdftopcf fonttosfnt mkfontscale ];
+
+  buildPhase = ''
+    runHook preBuild
+
+    # convert bdf fonts to pcf
+    for f in *.bdf; do
+        bdftopcf -t -o "''${f%.bdf}.pcf" "$f"
+    done
+    gzip -n -9 *.pcf
+
+    # convert bdf fonts to otb
+    for f in *.bdf; do
+        faketime -f "1970-01-01 00:00:01" \
+        fonttosfnt -v -m 2 -o "''${f%.bdf}.otb" "$f"
+    done
+
+    runHook postBuild
+  '';
+
+  installPhase = ''
+    runHook preInstall
+
+    dir=share/fonts/misc
+    install -D -m 644 -t "$out/$dir" *.otb *.pcf.gz
+    install -D -m 644 -t "$bdf/$dir" *.bdf
+    mkfontdir "$out/$dir"
+    mkfontdir "$bdf/$dir"
+
+    runHook postInstall
+  '';
+
+  outputs = [ "out" "bdf" ];
+
+  meta = with lib; {
+    description = "The /efont/ Unicode bitmap font";
+    homepage = "http://openlab.ring.gr.jp/efont/unicode/";
+    license = licenses.bsd3;
+    platforms = platforms.all;
+    maintainers = [ maintainers.ncfavier ];
+  };
+}