net: wangxun: Support to get ts info

Implement the function get_ts_info and get_ts_stats in ethtool_ops to
get the HW capabilities and statistics for timestamping.

Signed-off-by: Jiawen Wu <jiawenwu@trustnetic.com>
Reviewed-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Link: https://patch.msgid.link/20250218023432.146536-3-jiawenwu@trustnetic.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>