Configuration of security handover.
Only applicable to certain devices
| subhdr | Magic and size for integrity check | 
| handover_msg_sender | Host which will send the security handover message | 
| handover_to_host_id | Host to which security functionality is handed over | 
| rsvd | Reserved | 
Data Fields | |
| struct tisci_boardcfg_substructure_header | subhdr | 
| uint8_t | handover_msg_sender | 
| uint8_t | handover_to_host_id | 
| uint8_t | rsvd [4] | 
| struct tisci_boardcfg_substructure_header tisci_boardcfg_sec_handover::subhdr | 
| uint8_t tisci_boardcfg_sec_handover::handover_msg_sender | 
| uint8_t tisci_boardcfg_sec_handover::handover_to_host_id | 
| uint8_t tisci_boardcfg_sec_handover::rsvd[4] |