qcacmn: Move mgmt descriptors per pdev for probe response throttling

Mgmt tx rx descriptors are now used instead of WMI descriptors
for management Tx/Rx.
Since WMI descriptors were per radio to support probe response throttling
the mgmt descriptors should also be moved from per psoc to per pdev.

The reason for this is probe response throttling should happen per radio
and not per psoc since if the mgmt frames peding counter is
maintained per psoc, it could affect other radios of the same psoc also.

The maximum number of mgmt descriptors per psoc was 50.
This is also changed to 512 mgmt descriptors per pdev which is the
same as WMI descriptors per radio as used earlier to support
probe response throttling.

Change-Id: Ibb46082e0acf340800418a7e9689a29cd688bdab
CRs-Fixed: 2146177
11 files changed