qcacmn: Clean up the extscan unified WMI (phase 2)

For a full explanation of the problem and phased solution refer to
"qcacmn: Clean up the extscan unified WMI (phase 1)", Change-Id
I11800361b572331cfada00fb7d518c314df20b43, in the qca-wifi-host-cmn
project.

For phase 2 (this change):
Replace all references of the badly named identifiers with references
to the properly named substitutes. Note that this phase may touch
multiple repos and may involve a number of separate changes.

Change-Id: Ie19d632faa50b23f18a2214a7b2502830ff3fbd3
CRs-Fixed: 2282767
4 files changed