By default, the driver fills the roam scan scheme as none for
all the triggers in WMI_ROAM_ENABLE_DISABLE_TRIGGER_REASON_CMDID
but if the roam scan scheme bitmap is set for particular
trigger, then for the corresponding trigger the roam scan scheme
should be sent as ROAM_TRIGGER_SCAN_MODE_PARTIAL.
Send ROAM_TRIGGER_SCAN_MODE_PARTIAL if roam scan scheme bitmap is
provided.
Change-Id: I82f16f7c0e24be472c95278eb3085f7d2623b63a
CRs-Fixed: 2914142