The warning message of unsupported FW appears every time RX timestamps
are disabled on the interface. The patch fixes the flags to correct set
for the check.

Fixes: 66ed81dc ("bnxt_en: Enable packet timestamping for all RX packets")
Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Vadim Fedorenko <vfedorenko@novek.ru>
Reviewed-by: Andy Gospodarek <gospo@broadcom.com>
Reviewed-by: Michael Chan <michael.chan@broadcom.com>
Link: https://lore.kernel.org/r/20220915234932.25497-1-vfedorenko@novek.ruSigned-off-by: Jakub Kicinski <kuba@kernel.org>