erlang: Add a patch for hosts without libz

erlang: Add a patch for hosts without libz

Since commit 640c988fd4, erts/configure adds -lz to LIBS but
this variable is also used in some Dynamic Erlang drivers. Fix
Makefiles in such drivers to use the LDLIBS variable instead.

This patch has been reported upstream (see
https://bugs.erlang.org/browse/ERL-529) and should fix:

  http://autobuild.buildroot.net/results/3a3b9a4568c706bd6caad3c63d356680c8405ac5/

Signed-off-by: Johan Oudinet <johan.oudinet@gmail.com>
Tested-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>