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/hebcal/default.nix

@@ -0,0 +1,26 @@
+{ lib, stdenv, fetchFromGitHub, autoreconfHook }:
+
+stdenv.mkDerivation rec {
+  version = "4.24";
+  pname = "hebcal";
+
+  src = fetchFromGitHub {
+    owner = "hebcal";
+    repo = "hebcal";
+    rev = "v${version}";
+    sha256 = "sha256-iWp2S3s8z/y4dZ66Ogqu7Yf4gTUvSS1J5F7d0ifRbcY=";
+  };
+
+  nativeBuildInputs = [ autoreconfHook ];
+
+  doCheck = true;
+
+  meta = with lib; {
+    homepage = "https://hebcal.github.io";
+    description = "A perpetual Jewish Calendar";
+    longDescription = "Hebcal is a program which prints out the days in the Jewish calendar for a given Gregorian year. Hebcal is fairly flexible in terms of which events in the Jewish calendar it displays.";
+    license = licenses.gpl2;
+    maintainers = [ maintainers.hhm ];
+    platforms = platforms.all;
+  };
+}