qcacld-3.0: Fix LFR2 failed for roam scan mode 0

Regression of Change-Id:
I1de3f71ca96de9f464d5d33b0271f99c55cff535
make LFR2 roam scan mode config
WMI_ROAM_SCAN_MODE_RSSI_CHANGE depend on roam_force_rssi_trigger
which is uninitialzed when LFR3 disabled, so roam scan mode 0
is sent to F/W wrongly in WMI_ROAM_SCAN_MODE when LFR2 enabled.

Fix: Initialize roam_force_rssi_trigger in roam offload scan
request with ini config for LFR2 too.

Change-Id: Ifd65119a87a6a348a952a4eec70a336015192d43
CRs-Fixed: 2704513