qcacld-3.0: Do not set acs_in_progress if ACS scan is skipped
If ACS scan is skipped, then ACS request is completed and vendor
event is sent to userspace in same context, so there is no need to set
acs_in_progress when ACS scan is skipped.
Change-Id: Id3d1235e405832ce66a1b8837dc04e94bb3c6b64
CRs-Fixed: 3296939