doc: release-notes-4.0: add release notes for USB#81400

mmahadevan108 merged 1 commit intozephyrproject-rtos:mainzephyrproject-rtos/zephyr:mainfrom

jfischer-no:pr-relnotes-v4.0.0jfischer-no/zephyr:pr-relnotes-v4.0.0Copy head branch name to clipboard