Add ini support to configure 6GHz active and passive
scan dwell time and send this to firmware
to be used for LFR scans via WMI_ROAM_SCAN_MODE.
Based on these values, firmware will use host sent values
else use hardcoded values.
Currently firmware uses hardcoded values to configure 6Ghz
roam scan dwell time. With this change user can configure
it using INI.
Change-Id: I90e79ad59eef7f73faa0b9dfd2d38b65aca12285
CRs-Fixed: 3116861
aaf60192cf