- MFC r252661, r252705, r252711, r252715, r252716, r252724, r252728,
  r252747.
- Connect t3_tom and t4_tom to the build (r252555 enables them).

r252661:
- Include the T5 firmware with the driver.
- Update the T4 firmware to the latest.
- Minor reorganization and updates to the version macros, etc.

r252705:
- Read all TP parameters in one place.
- Read the filter mode, calculate various shifts, and use them
  properly during active open (in select_ntuple).

r252711:
The T5 allows the driver to specify the ISS.  Do so; use the ISS picked
by the kernel.

r252715:
Ring the egress queue's doorbell as soon as there are 8 or more
descriptors ready to be processed.

r252716:
Pay attention to TCP_NODELAY when it's set/unset after the connection
is established.

r252724:
On-the-fly changes to the interrupt coalescing timer should apply to the
TOE rx queues too.

r252728:
- Make note of interface MTU change if the rx queues exist, and not just
  when the interface is up.
- Add a tunable to control the TOE's rx coalesce feature (enabled by
  default as it always has been).  Consider the interface MTU or the
  coalesce size when deciding which cluster zone to use to fill the
  offload rx queue's free list.  The tunable is:
  dev.{t4nex,t5nex}.<N>.toe.rx_coalesce

r252747:
- Show the reason why link is down if this information is available.
- Display the temperature and PHY firmware version of the BT PHY.
MFC r252472:

Make hastctl(1) ('list' command) output a worker pid.

Reviewed by:	pjd
MFC r252516, r252540:

Add a mib for worker process ID.
MFC r243628:

  Update comment to prefer M_NOWAIT over M_DONTWAIT and
  M_WAITOK over M_WAIT.
MFC r242998:

  Remove description of deprecated IP fragment checksum support.
  Since SMPng it wasn't really supported anymore and if it worked
  then only by chance.  Only very few drivers ever supported it.

  Discussed with:	yongari
MFC r242308:

  Define the delayed ACK timeout value directly as hz/10 instead of
  obfuscating it by going through PR_FASTHZ.  No functional change.