* changes:
Unify def tBTM_SEC_CBACK=>tBTM_SEC_CALLBACK
Simplify stack/acl/btm_acl::btm_acl_created()
Removed unused tACL_CONN fields
Use API stack/acl/btm_acl
Add APIs to stack/acl/btm_acl
Use API stack/acl/btm_acl::btm_acl_connection_request
Add API stack/acl/btm_acl::btm_acl_connection_request
Wrap tL2C_LCB::link_role in API
Rename btm_dev_support_switch
Streamline stack/btm/btm_dev::btm_dev_support_switch
Replace BTM_ACL_PKT_TYPES_MASK_