sm: send le read p256 public key on start

sm: add identity_addr and identiy_addr_type to SM_EVENT_IDENTITY_RESOLVING_SUCCEEDED. Also emit SM_EVENT_IDENTITY_CREATED during pairing

hci: disable parts of classic code if ENABLE_CLASSIC is not defined

sm: avoid cppcheck errors (false positive) about unitilized variables

sm: handle IRK lookup in general case, inline SM_SC_SEND_LTK_REQUESTED_NEGATIVE_REPLY handling

sm: fix sending of negative ltk reply

sm: fix pairing in legacy mode

sm: reduce mbedtls heap to less than 800 bytes for 32-bit CPUs. Use mbedtls_mpi_lset instead of mbedtls_mpi_read_string

sm: store non-truncated LTK in setup->sm_local_ltk for cross transport key derivation - see E6405

sm: store non-truncated LTK in setup->sm_local_ltk for cross transport key derivation - see E6405

sm: truncate LTK for SC as needed

sm: add le_device_db_set_local_addr and call with local address

sm: fix SC key exchange (regression from d747193)

sm: use ltk from db for sc in initiator role

sm: use ltk from db for sc in responder role, fix sending keypress notifictations

sm: on LTK request, if ediv or rand no null, start calculating LTK for legacy pairing. If ediv or rand not null, check le device db for LTK if SC are enabled on LTK

sm: extract sm_start_calculating_ltk_from_ediv_and_rand

sm: remove temp hack to store LTK for SC

sm: store LTK in db for SC. document key management strategy

sm: derive BR/EDR Link Key from LE LTK established via LE Secure Connection

sm: sm_cmac_start -> sm_cmac_signed_write

sm: drop single event handler

sm: send/receive keypress notifications

sm: fix compile without sc

sm: fix compile