This is a qcacld-2.0 to qcacld-3.0 propagation.
Firmware currently sets the default access category to ARP packets
as voice traffic id and host does not have a way to override this.
As a part of this change, add the cfg.ini support to override this
default access category.
Change-Id: I268cb9c0254d14f143615790c570ac5a255b359d
CRs-Fixed: 1111993