In case of WTC_BTM roam trigger reason, if FW reports rssi
threshold for 5G and 6G AP via wmi_roam_trigger_reason,
Host should print it in kmsg.
If wtc_candi_rssi_ext_present is set (1), It means fw
reports 5g and 6g candidate rssi (new firmware case).
If wtc_candi_rssi_ext_present is clear (0), It means fw
doesn’t report 5g and 6g candidate rssi (old firmware case).
Host use flag "wtc_candi_rssi_ext_present" to keep backward
compatibility.
Change-Id: Idbaac2e9d470525641c152b024b8786d262e600c
CRs-Fixed: 2965025