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/reredirect/default.nix

@@ -0,0 +1,29 @@
+{ lib, stdenv, fetchFromGitHub }:
+
+stdenv.mkDerivation rec {
+  pname = "reredirect";
+  version = "0.2";
+
+  src = fetchFromGitHub {
+    owner = "jerome-pouiller";
+    repo = "reredirect";
+    rev = "v${version}";
+    sha256 = "0aqzs940kwvw80lhkszx8spcdh9ilsx5ncl9vnp611hwlryfw7kk";
+  };
+
+  makeFlags = [ "PREFIX=${placeholder "out"}" ];
+
+  postFixup = ''
+    substituteInPlace ${placeholder "out"}/bin/relink \
+      --replace "reredirect" "${placeholder "out"}/bin/reredirect"
+  '';
+
+  meta = with lib; {
+    description = "Tool to dynamicly redirect outputs of a running process";
+    homepage = "https://github.com/jerome-pouiller/reredirect";
+    license = licenses.mit;
+    maintainers = [ maintainers.tobim ];
+    platforms = [ "i686-linux" "x86_64-linux" ];
+  };
+}
+