Add ini config required for FTM time sync feature.
"enable_time_sync_ftm"- ini to enable/disable the feature.
"time_sync_ftm_mode" - ini to configure the burst/aggregated mode.
In burst mode the offset derived for each RTT frame is sent by
firmware, in aggregated mode only one offset is sent by firmware.
"time_sync_ftm_role" - ini to configure slave(STA)/master(SAP) role.
Change-Id: I6a06d6fdc4c7556c32ab2d28f1cbaa936b98a85b
CRs-Fixed: 2618654