btif_iot_config: Add new iot config apis to store remote info(2/2)

btif_iot_config apis is used to store remote device info
to local conf. For the remote info, please refer to
btif_iot_conf_defs.h

Change-Id: Id1333db7e6ce403e9b3952acbf260b432e969ab4
CRs-Fixed: 2143184
4 files changed