cds_is_module_state_transitioning() is effectively a partial
re-implementation of wlan_hdd_validate_context(). Instead of having
multiple copies of this logic, register a new callback in QDF which
simply calls wlan_hdd_validate_context() instead.
Change-Id: If533d72725b4cc9dbe5e4b9c25e499657c8e1376
CRs-Fixed: 2308771