edje: explicitly enable libsndfile for target recipe

* there is no native/nativesdk support in libsndfile so disable it fro native/nativesdk edje
* Thanks to Koen for noticing that it's autodetected and sometimes leaks into feeds

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>