add gatt_get_mtu daemon command and GATT_MTU response event

correct setting custom baudrate or bd_addr during init

handle CSR Warm Boot

resend HCI Reset using timer

rewrote hci initialization to be less clever/more sane

use enumerated hci initialization substates

enumerate hci initialization substates

change hci_local_bd_adr

sm starts encryption using ltk/ediv/rand from previous bonding

new states for re-establishing secure connection

rename central_device_db into le_device_db

Stop using pointer to array for bd_addr_t and link_key_t

added missing type for hci_send_acl_packet_buffer

missing commit for reestablish encrypted connection as peripheral

use single timer for SM, stop timer on sm_done_for_handle

added events for HSP

use sm_active_connection as mutex for setup context struct

accept connection request for SCO connections, create hci_connection_t for sco, count outgoing packets and free slots, handle num packets completed

prepare SCO sending

store num and size of SCO packets

move Security Manager sm_connection_t struct into hci.h for integration into hci_connection_t

send vendor specific command to set bd addr if both set and provided via bt_control_t

streamline copyright headers

removed deprecated hci functions

avoid sending acl packets for connections where HCI_EVENT_DISCONNECTION_COMPLETE has been received