sdp_client: iterate over registered SDP query callbacks

avdtp: streamlinw avdtp_handle_sdp_client_query_result, only register new query if connection is waiting

avdtp: extract avdtp_get_next_connection_ready_for_sdp_query

avdtp: init sdp query callback in avdtp_init

chipset/bcm: detect CYW5551x for firmware download

hci: use correct guards for hci_handle_connection_failed

hci: use correct guards for le_handle_extended_advertisement_report and hci_le_num_phys

Analog to PR #642

l2cap: send fcs option from ertm config, use fcs if either side requested it

pbap_client: add pbap_client_create_sdp_record

pbap_client: use SRM + SRMP headers in flow control mode

obex_srm_client: add obex_srm_client_set_waiting

goep_client: add goep_client_header_add_srmp_waiting

pbap_client: add missing include

l2cap: mark internal BTstack events

sm: validate OOB data before sending random nonce

tool/state_num: remove whitespace

gatt_client: allow read multiple variable for unenhanced att bearer

gatt_client: allow to ignore EATT bearer

gatt_client: fix gatt client connected event

l2cap: fix returned error codes for insufficient CBM connection

l2cap: add FCS option to ERTM configure response

l2cap: fix spelling

l2cap: set extended flow control bit in information response if enabled

hci: truncate L2CAP packet to l2cap PDU size

gap: add gap_request_connection_subrating