bnxt_en: Add tx_resets ring counter

bnxt_en: Add tx_resets ring counter

Add a new tx_resets ring counter.  This counter will be saved as
tx_total_resets across any reset.  Since we currently do a full reset
in bnxt_sched_reset_txr(), the per ring counter will always be cleared
during reset.  Only the tx_total_resets count will be meaningful and we
only display this under ethtool -S.

Link: https://lore.kernel.org/netdev/CACKFLimD-bKmJ1tGZOLYRjWzEwxkri-Mw7iFme1x2Dr0twdCeg@mail.gmail.com/
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Link: https://lore.kernel.org/r/20230817231911.165035-7-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>