doc: update driver TX algorithm in timestamping.txt
Since cd4d8fda ("net: kernel panic in dev_hard_start_xmit: remove faulty software TX time stamping") dev_hard_start_xmit() will not provide software timestamps. It's a responsibility of the drivers to call skb_tx_timestamp() at the right time. Cc: linux-doc@vger.kernel.org Signed-off-by: NJakub Kicinski <kubakici@wp.pl> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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