tc3566x: add to posix-h4 and windows-h4 ports

more .gitignore

posix-h4: use fast uart for EM chipsets

add le_data_channel examples to most ports

em9304: use 4-bit table for crc32 calculation

posix-h4: add meta patch for em9304

less noise, more .gitignore

sm: ENABLE_MICRO_ECC_FOR_LE_SECURE_CONNECTIONS enables micro-ecc software implementation

posix-h4: allow to specify h4 device with -u option

Revert "atwilc3000: uart flow control intially disabled"

This reverts commit 40ad23881dbcd17fb2a6e64bb0326f14f9734886.

atwilc3000: uart flow control intially disabled

Cleanup via .gitignore

hci: require ENABLE_LE_DATA_LENGTH_EXTENSION to enable max packet lenghts

example/avdtp_sink: move avdtp_sink_demo to examples

btstack_stdin: replace stdin_support.[ch] with btstack_stdin.h and platform implementations

cc256x: support CC256xB Service Pack v1.6 and use in all CC256x ports

posix/windows-h4: correct local info printout

csr: support setting baud rate via h4/h5

posix/windows ports: show BD ADDR when stack running

cc256x: use 1.5 initscript for CC2564B. Controller to Host Flow Control is broken on 1.4 but works on 1.5

bluetooth_company_id: use scraped defines instead of small set from bluetooth.h before

bluetooth_company_id: use scraped defines instead of small set from bluetooth.h before

tool: add update_filename.py that adds __BTSTACK_FILE__ to every .c file for use with debug output instead of __FILE__

hfp: ENABLE_HFP_WIDE_BAND_SPEECH required for HFP mSBC

posix-h4: update serial ports for my test boards