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/patchelf/default.nix

@@ -0,0 +1,32 @@
+{ lib, stdenv, fetchurl }:
+
+# 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 = "patchelf";
+  version = "0.14.5";
+
+  src = fetchurl {
+    url = "https://github.com/NixOS/${pname}/releases/download/${version}/${pname}-${version}.tar.bz2";
+    sha256 = "sha256-uaRvKYkyLrifpPYjfiCDbFe0VapDoyVF6gk7Qx2YL1w=";
+  };
+
+  strictDeps = true;
+  setupHook = [ ./setup-hook.sh ];
+
+  enableParallelBuilding = true;
+
+  # fails 8 out of 24 tests, problems when loading libc.so.6
+  doCheck = stdenv.name == "stdenv-linux";
+
+  meta = with lib; {
+    homepage = "https://github.com/NixOS/patchelf";
+    license = licenses.gpl3Plus;
+    description = "A small utility to modify the dynamic linker and RPATH of ELF executables";
+    maintainers = [ maintainers.eelco ];
+    platforms = platforms.all;
+  };
+}