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/file/default.nix

@@ -0,0 +1,33 @@
+{ lib, stdenv, fetchurl, file, zlib, libgnurx }:
+
+stdenv.mkDerivation rec {
+  pname = "file";
+  version = "5.41";
+
+  src = fetchurl {
+    urls = [
+      "ftp://ftp.astron.com/pub/file/${pname}-${version}.tar.gz"
+      "https://distfiles.macports.org/file/${pname}-${version}.tar.gz"
+    ];
+    sha256 = "sha256-E+Uyx7Nk99V+I9/uoxRxAxUMuQWTpXr4bBDk9uQRYD8=";
+  };
+
+  strictDeps = true;
+  enableParallelBuilding = true;
+
+  nativeBuildInputs = lib.optional (stdenv.hostPlatform != stdenv.buildPlatform) file;
+  buildInputs = [ zlib ]
+    ++ lib.optional stdenv.hostPlatform.isWindows libgnurx;
+
+  doCheck = true;
+
+  makeFlags = lib.optional stdenv.hostPlatform.isWindows "FILE_COMPILE=file";
+
+  meta = with lib; {
+    homepage = "https://darwinsys.com/file";
+    description = "A program that shows the type of files";
+    maintainers = with maintainers; [ doronbehar ];
+    license = licenses.bsd2;
+    platforms = platforms.all;
+  };
+}