hci_transport_h4: eHCILL working on POSIX

hci_transport/btstack_uart_block: create btstack_uart_block_embedded on top of hal_uart_dma. Pass in uart driver to H4/H5 instances

fix compile

move 'BTstack up and running' message from examples into port/../main.c

posix: cleanup fast FTDI hack

prefix POSIX related HAVE_ defines

posix: support B300/B1200 mapped to 2mbps hack

hci: re-add local version information callback for dynamic chipset configuration

fix comile

hci: set link_key_db via hci_set_link_key_db instead of via hci_init().

hci: remove callback for local information - use hci_add_event_handler instead

use little/big_endian_read/store_16/24/32

hci_transport: cleanup struct, add init(void *transport_config)

posix-h4: autodetect TI CC256x, CSR, STM STLC2500d, TC2566x chipsets

hci: added local version information callback to allow for runtime driver selection

remove btstack_control_h from hci_init. mark btstack_control, hci_transport, and hci_transport_config as const

btstack-config.h -> btstack_config.h

use hci_transport_TYPE_instace() consistently. Fix iOS port build

prefix run_loop_ functions with btstack_

forgot to add files in earlier commit

run_loop.h -> btstack_run_loop.h

prefix debug with btstack_

hci_transport_h4.c -> hci_transport_h4_posix.c

hci_trasport: add type to hci transport config, update all ports

run_loop: pass in run_loop_X_get_instance() to run_loop_init(). Various other fixes