build: fix macos race condition

There was the problem that evas_ector_software_buffer.eo was not arround
but required by the gl_generic engine, this fixes that by adding the
generated source and dependencies to the software_generic dependency.

Reviewed-by: Stefan Schmidt <stefan@datenfreihafen.org>
Differential Revision: https://phab.enlightenment.org/D7871

src/modules/evas/meson.build

@@ -70,6 +70,7 @@ foreach engine_conf : engines
       if engine == 'software_generic'
         software_generic = declare_dependency(
           include_directories: engine_include_dir,
+          source : engine_src,
           link_with : tmp
         )
       endif