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/security/crunch/default.nix

@@ -0,0 +1,30 @@
+{ lib, stdenv, fetchurl, which }:
+
+stdenv.mkDerivation rec {
+  pname = "crunch";
+  version = "3.6";
+
+  src = fetchurl {
+    url = "mirror://sourceforge/crunch-wordlist/${pname}-${version}.tgz";
+    sha256 = "0mgy6ghjvzr26yrhj1bn73qzw6v9qsniskc5wqq1kk0hfhy6r3va";
+  };
+
+  buildInputs = [ which ];
+
+  preBuild = ''
+    substituteInPlace Makefile \
+      --replace '-g root -o root' "" \
+      --replace '-g wheel -o root' "" \
+      --replace 'sudo ' ""
+  '';
+
+  makeFlags = [ "PREFIX=$(out)" ];
+
+  meta = with lib; {
+    description = "Wordlist generator";
+    homepage = "https://sourceforge.net/projects/crunch-wordlist/";
+    platforms = platforms.unix;
+    license = with licenses; [ gpl2Only ];
+    maintainers = with maintainers; [ lnl7 ];
+  };
+}