qcacld-3.0: Introduce ini param for full roam scan period

Full roam scan period is the minimum idle period in seconds between
two successive full channel roam scans. Firmware expects this param
as part of roam scan offload request. Add an ini param to set
it to a default value and use it while sending roam scan offload
request.

Change-Id: Id66b583b2c487f06e62298641dc28853af3ab11c
CRs-Fixed: 2507448
1 file changed