net/qede/base: changes for VF queue zone

net/qede/base: changes for VF queue zone

Allow opening Multiple Tx queues on a single qzone for VFs.
This is supported by Rx/Tx TLVs now having an additional extended TLV that
passes the `qid_usage_idx', a unique number per each queue-cid that was
opened for a given queue-zone.

Fix to overcome TX timeout issue due to more than 16 CIDs by adding an
additional VF legacy mode. This will detach the CIDs from the original
only-existing legacy mode suited for older releases.
Following this change, only VFs that would publish VFPF_ACQUIRE_CAP_QIDS
would have the new CIDs scheme applied. I.e., the new 'legacy' mode is
actually whether this capability is published or not.

Changed the logic to clear doorbells for legacy and non-legacy VFs, so
the PF is cleaning the doorbells for both cases.

Signed-off-by: Rasesh Mody <rasesh.mody@cavium.com>