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/libraries/acl/default.nix

@@ -0,0 +1,37 @@
+{ lib, stdenv, fetchurl, gettext, attr }:
+
+# Note: this package is used for bootstrapping fetchurl, and thus
+# cannot use fetchpatch! All mutable patches (generated by GitHub or
+# cgit) that are needed here should be included directly in Nixpkgs as
+# files.
+
+stdenv.mkDerivation rec {
+  pname = "acl";
+  version = "2.3.1";
+
+  src = fetchurl {
+    url = "mirror://savannah/acl/acl-${version}.tar.gz";
+    sha256 = "sha256-dgxhxokBs3/dXu/ur0wMeia9/disdHoe3/HODiQ8Ea8=";
+  };
+
+  outputs = [ "bin" "dev" "out" "man" "doc" ];
+
+  nativeBuildInputs = [ gettext ];
+  buildInputs = [ attr ];
+
+  # Upstream use C++-style comments in C code. Remove them.
+  # This comment breaks compilation if too strict gcc flags are used.
+  patchPhase = ''
+    echo "Removing C++-style comments from include/acl.h"
+    sed -e '/^\/\//d' -i include/acl.h
+
+    patchShebangs .
+  '';
+
+  meta = with lib; {
+    homepage = "https://savannah.nongnu.org/projects/acl";
+    description = "Library and tools for manipulating access control lists";
+    platforms = platforms.linux;
+    license = licenses.gpl2Plus;
+  };
+}