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/applications/misc/jp2a/default.nix

@@ -0,0 +1,44 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+, libjpeg
+, libpng
+, ncurses
+, autoreconfHook
+, autoconf-archive
+, pkg-config
+, bash-completion
+}:
+
+stdenv.mkDerivation rec {
+  version = "1.1.1";
+  pname = "jp2a";
+
+  src = fetchFromGitHub {
+    owner = "Talinx";
+    repo = "jp2a";
+    rev = "v${version}";
+    sha256 = "sha256-CUyJMVvzXniK5fdZBuWUK9GLSGJyL5Zig49ikGOGRTw=";
+  };
+
+  makeFlags = [ "PREFIX=$(out)" ];
+
+  nativeBuildInputs = [
+    autoreconfHook
+    autoconf-archive
+    pkg-config
+    bash-completion
+  ];
+  buildInputs = [ libjpeg libpng ncurses ];
+
+  installFlags = [ "bashcompdir=\${out}/share/bash-completion/completions" ];
+
+  meta = with lib; {
+    broken = stdenv.isDarwin;
+    homepage = "https://csl.name/jp2a/";
+    description = "A small utility that converts JPG images to ASCII";
+    license = licenses.gpl2Only;
+    maintainers = [ maintainers.FlorianFranzen ];
+    platforms = platforms.unix;
+  };
+}