bnxt_en: add timestamping statistics support

The ethtool_ts_stats structure was introduced earlier this year. Now
it's time to support this group of counters in more drivers.
This patch adds support to bnxt driver.

Signed-off-by: Vadim Fedorenko <vadfed@meta.com>
Reviewed-by: Michael Chan <michael.chan@broadcom.com>
Link: https://lore.kernel.org/r/20240530204751.99636-1-vadfed@meta.com


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