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/libf2c/default.nix

@@ -0,0 +1,40 @@
+{lib, stdenv, fetchurl, unzip}:
+
+stdenv.mkDerivation rec {
+  pname = "libf2c";
+  version = "20160102";
+
+  src = fetchurl {
+    url = "http://www.netlib.org/f2c/libf2c.zip";
+    sha256 = "1q78y8j8xpl8zdzdxmn5ablss56hi5a7vz3idam9l2nfx5q40h6a";
+  };
+
+  unpackPhase = ''
+    mkdir build
+    cd build
+    unzip ${src}
+  '';
+
+  makeFlags = [ "-f" "makefile.u" ];
+
+  installPhase = ''
+    mkdir -p $out/include $out/lib
+    cp libf2c.a $out/lib
+    cp f2c.h $out/include
+  '';
+
+  nativeBuildInputs = [ unzip ];
+
+  hardeningDisable = [ "format" ];
+
+  # Makefile is missing depepdencies on generated headers:
+  #   main.c:4:10: fatal error: signal1.h: No such file or directory
+  enableParallelBuilding = false;
+
+  meta = {
+    description = "F2c converts Fortran 77 source code to C";
+    homepage = "http://www.netlib.org/f2c/";
+    license = lib.licenses.mit;
+    platforms = lib.platforms.unix;
+  };
+}