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/tools/misc/acr/default.nix

@@ -0,0 +1,33 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+}:
+
+stdenv.mkDerivation rec {
+  pname = "acr";
+  version = "2.0.0";
+
+  src = fetchFromGitHub {
+    owner = "radareorg";
+    repo = "acr";
+    rev = version;
+    hash = "sha256-ma4KhwGFlLCfRQvQ11OdyovgGbKQUBo6qVRrE7V2pNo=";
+  };
+
+  preConfigure = ''
+    chmod +x ./autogen.sh && ./autogen.sh
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/radareorg/acr/";
+    description = "Pure shell autoconf replacement";
+    longDescription = ''
+      ACR tries to replace autoconf functionality generating a full-compatible
+      'configure' script (runtime flags). But using shell-script instead of
+      m4. This means that ACR is faster, smaller and easy to use.
+    '';
+    license = licenses.gpl2Plus;
+    maintainers = with maintainers; [ AndersonTorres ];
+    platforms = with platforms; all;
+  };
+}