qcacmn: Add direct rx buffer changes for CFR requirements

CFR requires to configure the number of DBRs that can be packed
in a single DBR event. Currently, this is fixed value.
Make this configurable at the time of registration.

CRs-Fixed: 2415489
Change-Id: Ifcd606641f986a5345f8ccb361c3f45db07fdc37
5 files changed