enjoy: Add inherit gettext

* Without this patch bitbake fails to build this recipe, and it says this line should be added to recipe

Signed-off-by: Pau Espin Pedrol <pespin.shar@gmail.com>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>