bnxt: convert to ndo_set_rx_mode_async

bnxt: convert to ndo_set_rx_mode_async

Convert bnxt from ndo_set_rx_mode to ndo_set_rx_mode_async.
bnxt_set_rx_mode, bnxt_mc_list_updated and bnxt_uc_list_updated
now take explicit uc/mc list parameters and iterate with
netdev_hw_addr_list_for_each instead of netdev_for_each_{uc,mc}_addr.

The bnxt_cfg_rx_mode internal caller passes the real lists under
netif_addr_lock_bh.

BNXT_RX_MASK_SP_EVENT is still used here, next patch converts to
the direct call.

Cc: Michael Chan <michael.chan@broadcom.com>
Cc: Pavan Chebbi <pavan.chebbi@broadcom.com>
Reviewed-by: Michael Chan <michael.chan@broadcom.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20260416185712.2155425-8-sdf@fomichev.me
Signed-off-by: Paolo Abeni <pabeni@redhat.com>