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/tk/8.6.nix

@@ -0,0 +1,29 @@
+{ lib
+, stdenv
+, callPackage
+, fetchurl
+, fetchpatch
+, tcl
+, ...
+} @ args:
+
+callPackage ./generic.nix (args // {
+
+  src = fetchurl {
+    url = "mirror://sourceforge/tcl/tk${tcl.version}.1-src.tar.gz"; # TODO: remove '.1' for v8.6.10 or v8.7.x
+    sha256 = "1gh9k7l76qg9l0sb78ijw9xz4xl1af47aqbdifb6mjpf3cbsnv00";
+  };
+
+  patches = [ ./different-prefix-with-tcl.patch ] ++ lib.optionals stdenv.isDarwin [
+    ./Fix-bad-install_name-for-libtk8.6.dylib.patch
+    # Define MODULE_SCOPE before including tkPort.h
+    # https://core.tcl-lang.org/tk/info/dba9f5ce3b
+    (fetchpatch {
+      name = "module_scope.patch";
+      url = "https://core.tcl-lang.org/tk/vpatch?from=ef6c6960c53ea30c&to=9b8aa74eebed509a";
+      extraPrefix = "";
+      sha256 = "0crhf4zrzdpc1jdgyv6l6mxqgmny12r3i39y1i0j8q3pbqkd04bv";
+    })
+  ];
+
+})