Previously the traffic class field is ignored while firmware has
already supported to pedit flowinfo fields, including traffic
class and flow label, now add it back.
Signed-off-by: Yinjun Zhang <yinjun.zhang@corigine.com>
Link: https://lore.kernel.org/r/20220609080136.151830-1-simon.horman@corigine.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>