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/tools/filesystems/cpcfs/default.nix

@@ -0,0 +1,41 @@
+{ lib, stdenv, fetchFromGitHub, makeWrapper, ncurses, readline, ronn }:
+
+stdenv.mkDerivation rec {
+
+  pname = "cpcfs";
+  version = "0.85.4";
+
+  src = fetchFromGitHub {
+    owner = "derikz";
+    repo = "cpcfs";
+    rev = "v${version}";
+    sha256 = "0rfbry0qy8mv746mzk9zdfffkdgq4w7invgb5cszjma2cp83q3i2";
+  };
+
+  sourceRoot = "source/src";
+
+  nativeBuildInputs = [ makeWrapper ncurses readline ronn ];
+
+  postPatch = ''
+    substituteInPlace Makefile \
+      --replace '-ltermcap' '-lncurses' \
+      --replace '-L /usr/lib/termcap' ' '
+  '';
+
+  installPhase = ''
+    runHook preInstall
+    mkdir -p $out/bin
+    mkdir -p $out/man/man1
+    cp cpcfs $out/bin
+    ronn --roff ../template.doc --pipe > $out/man/man1/cpcfs.1
+    runHook postInstall
+  '';
+
+  meta = with lib; {
+    description = "Manipulating CPC dsk images and files";
+    homepage = "https://github.com/derikz/cpcfs/" ;
+    license = licenses.bsd2;
+    maintainers = [ ];
+    platforms = platforms.all;
+  };
+}