Add hci_event_builder.c to various ports and tests
port/stm32-*: fix all builds
Avoid __ prefix in defines
port: update Makefile builds for embedded
stm32-f4discovery-usb: added i2s pll tables and samplerate compensation supportstm32-f4discovery-cc256xx: dokumentation and some cleanups
hfp_codec: add to all ports
stm32-f4discovery-usb: fix typo
port: allow one MAX_NR_HID_HOST_CONNECTIONS and MAX_NR_HIDS_CLIENTS for HID(S) host demos
port: set MAX_NR_AVRCP_CONNECTIONS to 2 to make volume control work in a2dp_source_demo
ports: replace ENABLE_SCO_STEREO_PLAYBACK with HAVE_HAL_AUDIO_SINK_STEREO_ONLY
ports: add a2dp
ports: add link to documentation in btstack_config.h
port: replace obex_iterator wirh obex_parser
btstack_config: use official terms for l2cap channel modes - ENABLE_L2CAP_LE_CREDIT_BASED_FLOW_CONTROL_MODE
license: update text
port: copy edit port readmes, archive ios port
port: fix embedded builds (ancs_client.c -> ble/gatt-service)
hci_transport: extract convenience function declaration for h4, h5, em9304_spi, and usb into separate hci_transport_{type}.h
stm32-f4discovery-usb: fix build
hci_dump: stm32 ports
Remove btstack_run_loop_base from port and test
move GATT Service clients into ble/gatt-service
stm32 ports: add battery and device information clients, test/security_manager_sc: add run loop base
btstack_run_loop_embedded: use run loop base (build)
stm32-f4discovery-usb: enable audio support
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