ca98ecf11 tests/intel/kms_usb4_switch: Add USB4 switch test suite
81e554d68 tests/kms_feature_discovery: add basic usb4 switch discovery
9827a55f7 lib/igt_usb4_switch: add helper library for USB4 Switch 3141
78b016eb8 lib/igt_serial: add generic serial communication helper
63aaaa7b1 lib/igt_connector_helper: Add generic connector helpers
d765b089f lib/igt_edid: add EDID serial extraction helpers