Petr Machata says:
====================
selftests: mlxsw: Convert to iproute2 dcb
There is a dedicated tool for configuration of DCB in iproute2. Use it
in the selftests instead of lldpad.
Patches #1-#3 convert three tests. Patch #4 drops the now-unnecessary
lldpad helpers.
====================
Link: https://lore.kernel.org/r/cover.1675096231.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>