[RAMEN9610-10521][9610] wlbt: CONTROL_ROAMING feature in FW, and etc

1) Indicate CONTROL_ROAMING feature supported by FW to upper layers
2) Implement wifi_enable_firmware_roaming() API in Wifi HAL.
3) WifiHal changes for FTM implementation.

Change-Id: Ib26c77420682820e5e2b90aa9d0dc88e12a2614c
5 files changed