Dead-code removal, device_printf(9) logging, style(9) de-Linuxification,
const F/W-ops tables, and readability cleanups. No change for valid
traffic.

Dead code and logging:

• Remove the sub-gigabit TSO-masking block in the link-state ISR: it cleared IFCAP_TSO from the static isc_capabilities record (read only at attach / SIOCSIFCAP, never on the datapath), so it never gated TSO and only corrupted the validation mask. The Atlantic has no sub-gigabit TSO erratum.
• Tidy the RX buffer-size handling: drop the dead switch(MCLBYTES) in aq_if_rx_queues_alloc, rename rx_max_frame_size -> rx_buf_size, and bound the per-fragment length from the wb.pkt_len writeback (EBADMSG on underflow or a final fragment longer than the RX buffer).
• Drop every FreeBSD__/FreeBSD_version branch (FreeBSD 14.0 baseline); the pre-13 arms used pre-opaque-if_t APIs since removed and one never built.
• Route all log messages through device_printf(9) (MAC via %6D), adding a device_t to struct aq_hw; drop the dead AQ_XXX_UNIMPLEMENTED_FUNCTION and aq_log_error macros and the per-ring init console spam.
• Minor: comma -> semicolon in aq_if_attach_pre; (uint64_t) -> (uint32_t) TX high-word cast; MODULE_VERSION(atlantic, 1); remove unused/duplicate #includes.

style(9) and types:

• Remove all typedef'd struct/enum/union types (aq_dev_t, the speed/fc/ debug enums, the volatile RX/TX descriptor types, the firmware-file types) in favor of bare tags; for the DMA descriptors the volatile qualifier moves to the pointer/use sites. Drop the _s/_e tag suffixes and the "#define aq_hw_s aq_hw" alias. Rename the OOP-style *self parameter to hw. Replace usec_delay/msec_delay/ARRAY_SIZE/LOWORD with FreeBSD equivalents (BIT kept). attribute((packed)) -> __packed.

F/W-ops vtable:

• Rename the leftover hal parameter to hw; make aq_fw1x_ops/aq_fw2x_ops const (read-only data); drop the always-true "fw_ops &&" and always-present dispatch guards (only led_control, absent in F/W 1.x, keeps its NULL check).

Readability:

• aq_isc_rxd_pkt_get: fold the four identical RX-error blocks into one rx_err: label. aq_isc_rxd_available: hoist the shared descriptor advance out of the EOP test and drop the redundant continue. aq_hw_offload_set: drop the dead "int err = 0". Fix a stale "10 ms" comment on a 50 ms DELAY and the redundant literal parentheses.