qcacmn: Expose scan_backoff_multiplier for NLO/PNO

For Network Listen Offload and Perfered Network Offload, the fast scan
period is multiplied by scan_backoff_multiplier after max cycles have
occurred. Expose scan_backoff_multiplier to consumers of the WMI API,
so this parameter can be configured.

Change-Id: I478fb61cd096d3496205f4ff556e180dabf99b77
CRs-Fixed: 2035201

wmi_unified_tlv.c

@@ -7020,6 +7020,7 @@ static QDF_STATUS send_pno_start_cmd_tlv(wmi_unified_t wmi_handle,
 	cmd->slow_scan_period = pno->slow_scan_period;
 	cmd->delay_start_time = WMI_SEC_TO_MSEC(pno->delay_start_time);
 	cmd->fast_scan_max_cycles = pno->fast_scan_max_cycles;
+	cmd->scan_backoff_multiplier = pno->scan_backoff_multiplier;
 	WMI_LOGD("fast_scan_period: %d msec slow_scan_period: %d msec",
 			cmd->fast_scan_period, cmd->slow_scan_period);
 	WMI_LOGD("fast_scan_max_cycles: %d", cmd->fast_scan_max_cycles);