Currently the driver enques any number of scans it receives
from the NL, or vendor scan path, which can lead to lower
throughputs of the connected profile ( any vdev ), as
antennas would be used by the MAC for scanning, and if
the number of scans are too much, this will lead to a
bad user experience.
Fix is to have a max check of number of scans, and then only
enque a particular scan request.
Change-Id: Iacdb1294ff5e7e20cd30dd328c6ea2b6f7899cda
CRs-Fixed: 2392883
b170fa8000