qcacld-3.0: Return vendor abort status to userspace

Host completes scan, however due to memory allocation
failure, driver cannot send the scan completed event to
the userspace. After timeout, supplicant sends vendor
scan abort to the driver. However, driver doesn't send
the failure status(because driver doesn't have any active
scan to abort). Since, the status code is sent as 0,
supplicant keeps waiting for the scan completed status
event from host.

Send the vendor abort failure reason to the userspace, so that
the supplicant can clear out scan-in-progress flag.

Change-Id: I771b7d3d76c7d7aea58ac3d02665bd43da00e222
CRs-Fixed: 3707469