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/libtool/default.nix

@@ -0,0 +1,42 @@
+{lib, stdenv, fetchurl, m4, perl}:
+
+# 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 = "libtool";
+  version = "1.5.26";
+
+  src = fetchurl {
+    url = "mirror://gnu/${pname}/${pname}-${version}.tar.gz";
+    sha256 = "029ggq5kri1gjn6nfqmgw4w920gyfzscjjxbsxxidal5zqsawd8w";
+  };
+
+  nativeBuildInputs = [m4];
+  buildInputs = [perl];
+
+  # Don't fixup "#! /bin/sh" in Libtool, otherwise it will use the
+  # "fixed" path in generated files!
+  dontPatchShebangs = true;
+
+  meta = {
+    description = "Generic library support script";
+
+    longDescription = ''
+      GNU libtool is a generic library support script.  Libtool hides
+      the complexity of using shared libraries behind a consistent,
+      portable interface.
+
+      To use libtool, add the new generic library building commands to
+      your Makefile, Makefile.in, or Makefile.am.  See the
+      documentation for details.
+    '';
+
+    homepage = "https://www.gnu.org/software/libtool/";
+
+    license = lib.licenses.gpl2Plus;
+    platforms = lib.platforms.unix;
+  };
+}