ethtool: add support for setting TCP data split

Add support for controlling header split (aka TCP data split) feature,
backed by kernel commit 50d73710715d ("ethtool: add SET for
TCP_DATA_SPLIT ringparam"). Command format:

ethtool -G|--set-ring devname tcp-data-split [ auto|on|off ]

"auto" is defined solely by device's driver.

Signed-off-by: Alexander Lobakin <aleksander.lobakin@intel.com>
3 files changed