e-base: add module.so to PRIVATE_LIBS

e-base: add module.so to PRIVATE_LIBS

* efl and e17 modules are installed in different directories and nothing is going to
  link with them -> no need to register them in shlibs providers

* see https://bugzilla.yoctoproject.org/show_bug.cgi?id=4628 for more
  details about why this WARNING about multiple shlib providers was added

(From meta-openembedded rev: eff5824e9f49bcd1b3414062de476ec9158771de)

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Patrick Ohly <patrick.ohly@intel.com>