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/misc/msp430/newlib.nix

@@ -0,0 +1,25 @@
+{ stdenvNoCC, lndir, newlib, msp430GccSupport }:
+
+stdenvNoCC.mkDerivation {
+  name = "msp430-${newlib.name}";
+  inherit newlib;
+  inherit msp430GccSupport;
+
+  preferLocalBuild = true;
+  allowSubstitutes = false;
+
+  buildCommand = ''
+    mkdir $out
+    ${lndir}/bin/lndir -silent $newlib $out
+    ${lndir}/bin/lndir -silent $msp430GccSupport/include $out/${newlib.incdir}
+    ${lndir}/bin/lndir -silent $msp430GccSupport/lib $out/${newlib.libdir}
+  '';
+
+  passthru = {
+    inherit (newlib) incdir libdir;
+  };
+
+  meta = {
+    platforms = [ "msp430-none" ];
+  };
+}