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/development/libraries/libexsid/default.nix

@@ -0,0 +1,47 @@
+{ stdenv
+, lib
+, fetchFromGitHub
+, autoreconfHook
+, pkg-config
+, docSupport ? true
+, doxygen
+, libftdi1
+}:
+
+stdenv.mkDerivation rec {
+  pname = "libexsid";
+  version = "2.1";
+
+  src = fetchFromGitHub {
+    owner = "libsidplayfp";
+    repo = "exsid-driver";
+    rev = version;
+    sha256 = "1qbiri549fma8c72nmj3cpz3sn1vc256kfafnygkmkzg7wdmgi7r";
+  };
+
+  outputs = [ "out" ]
+    ++ lib.optional docSupport "doc";
+
+  nativeBuildInputs = [ autoreconfHook pkg-config ]
+    ++ lib.optional docSupport doxygen;
+
+  buildInputs = [ libftdi1 ];
+
+  enableParallelBuilding = true;
+
+  installTargets = [ "install" ]
+    ++ lib.optional docSupport "doc";
+
+  postInstall = lib.optionalString docSupport ''
+    mkdir -p $doc/share/libexsid/doc
+    cp -r docs/html $doc/share/libexsid/doc/
+  '';
+
+  meta = with lib; {
+    description = "Driver for exSID USB";
+    homepage = "http://hacks.slashdirt.org/hw/exsid/";
+    license = licenses.gpl2Plus;
+    maintainers = with maintainers; [ OPNA2608 ];
+    platforms = platforms.all;
+  };
+}