Merge branch '129-txt-buffer-in-bus-off' into 'master'

Resolve "TXT Buffer in bus-off"

Closes #129

See merge request illeondr/CAN_FD_IP_Core!117
3 jobs for <span class="ref-name">164-reference-test-problem</span> in 4 minutes and 10 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
passed #6416
triggered
build_driver

00:00:32

passed #6415
triggered
build_ip_and_tests

00:00:51

 
  Test
passed #6417
triggered
test_ip_fast

00:03:18

90.9%