Adjust ENA driver to the new ena-com
Recent HAL change preparing to support ENAv2 required minor driver
The ena_com_sq_empty_space() is not available in this ena-com, so it had
to be replaced with ena_com_free_desc().
Moreover, the ena_com_admin_init() is no longer using 3rd argument
indicating if the spin lock should be initialized, so it was removed.
Submitted by: Michal Krawczyk <firstname.lastname@example.org>
Obtained from: Semihalf
Sponsored by: Amazon, Inc.