meson: add missing ELM_EFREET

without this - elementary_config will crash, and elementary will not use
that much of Efreet. We might want to drop this #ifdef at some point.

Differential Revision: https://phab.enlightenment.org/D7176

src/lib/elementary/meson.build

@@ -886,6 +886,7 @@ config_h.set_quoted('ICON_DIR', join_paths(dir_lib, 'icons'))
 
 elm_options.set('ELM_UNIX', '1')
 elm_options.set('ELM_ELOCATION', '1')
+elm_options.set('ELM_EFREET', '1')
 
 if config_h.has('HAVE_ALLOCA_H')
   elm_options.set('ELM_ALLOCA_H', '1')