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/misc/foma/default.nix

@@ -0,0 +1,37 @@
+{ lib, stdenv, fetchFromGitHub, zlib, flex, bison, readline, darwin }:
+
+stdenv.mkDerivation rec {
+  pname = "foma";
+  version = "0.10.0alpha";
+
+  src = fetchFromGitHub {
+    owner = "mhulden";
+    repo = "foma";
+    rev = "82f9acdef234eae8b7619ccc3a386cc0d7df62bc";
+    sha256 = "1vf01l18j8cksnavbabcckp9gg692w6v5lg81xrzv6f5v14zp4nr";
+  };
+
+  sourceRoot = "source/foma";
+
+  nativeBuildInputs = [ flex bison ]
+    ++ lib.optional stdenv.isDarwin darwin.cctools;
+  buildInputs = [ zlib readline ];
+
+  makeFlags = [
+    "CC=${stdenv.cc.targetPrefix}cc"
+  ];
+
+  patchPhase = ''
+    substituteInPlace Makefile \
+      --replace '-ltermcap' ' ' \
+      --replace '/usr/local' '$(out)'
+  '';
+
+  meta = with lib; {
+    description = "A multi-purpose finite-state toolkit designed for applications ranging from natural language processing to research in automata theory";
+    homepage = "https://github.com/mhulden/foma";
+    license = licenses.asl20;
+    maintainers = [ maintainers.tckmn ];
+    platforms = platforms.all;
+  };
+}