Fix below compile issues:
1.error: no previous prototype for wifi_pos_get_vdev_priv_obj()
and wifi_pos_get_psoc_priv_obj().
2. error: incompatible integer to pointer conversion assigning
to 'struct wifi_pos_vdev_priv_obj *' or 'struct wifi_pos_psoc_priv_obj *'
from 'int'.
3. error: declaration of 'struct wifi_pos_osif_ops' will not be visible
outside of wifi_pos_register_osif_callbacks();
Change-Id: I6946f6240ed5adff291871c75ca85f848d955f4d
CRs-Fixed: 3356150
91036d45ac