sys: Remove $FreeBSD$: two-line .h pattern

Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/

mlx5: idiomatic use of preprocessor, in particular paths

MFC after: 1 week
Sponsored by: NVIDIA Networking

mlx5: normalize use of the opt_*.h files

MFC after: 1 week
Sponsored by: NVIDIA Networking

Update version information for the mlx5 and mlx5en(4) modules.

While at it bump some copyright dates.

MFC after: 1 week
Sponsored by: Mellanox Technologies

Use the autogenerated interface file for all commands in mlx5core.

This patch accumulates the following Linux commits:
- 90b3e38d048f09b22fb50bcd460cea65fd00b2d7
mlx5_core: Modify CQ moderation parameters
- 09a7d9eca1a6cf5eb4f9abfdf8914db9dbd96f08
mlx5_core: QP/XRCD commands via mlx5 ifc
- 1a412fb1caa2c1b77719ccb5ed8b0c3c2bc65da7
mlx5_core: Modify QP commands via mlx5 ifc
- ec22eb53106be1472ba6573dc900943f52f8fd1e
mlx5_core: MKey/PSV commands via mlx5 ifc
- 73b626c182dff06867ceba996a819e8372c9b2ce
mlx5_core: EQ commands via mlx5 ifc
- 20ed51c643b6296789a48adc3bc2cc875a1612cf
mlx5_core: Access register and MAD IFC commands via mlx5 ifc
- a533ed5e179cd15512d40282617909d3482a771c
mlx5_core: Pages management commands via mlx5 ifc
- b8a4ddb2e8f44f872fb93bbda2d541b27079fd2b
mlx5_core: Add MLX5_ARRAY_SET64 to fix BUILD_BUG_ON
- af1ba291c5e498973cc325c501dd8da80b234571
mlx5_core: Refactor internal SRQ API
- b06e7de8a9d8d1d540ec122bbdf2face2a211634
mlx5_core: Refactor device capability function
- c4f287c4a6ac489c18afc4acc4353141a8c53070
mlx5_core: Unify and improve command interface

Submitted by: Matthew Finlay <matt@mellanox.com>
MFC after: 1 week
Sponsored by: Mellanox Technologies

Updates for PCI and health monitor recovery in mlx5core.
This patch accumulates the following Linux commits:

mlx5_health.c
- 78ccb25861d76a8fc5c678d762180e6918834200
mlx5_core: Fix wrong name in struct
- 171bb2c560f45c0427ca3776a4c8f4e26e559400
mlx5_core: Update health syndromes
- 0144a95e2ad53a40c62148f44fb0c1f9d2a0d1e9
mlx5_core: Use accessor functions to read from device memory
- ac6ea6e81a80172612e0c9ef93720f371b198918
mlx5_core: Use private health thread for each device
- fd76ee4da55abb21babfc69310d321b9cb9a32e0
mlx5_core: Fix internal error detection conditions
- 2241007b3d783cbdbaa78c30bdb1994278b6f9b9
mlx5: Clear health sick bit when starting health poll
- 712bfef60912d91033cb25739f7444d5b8d8c59f
mlx5: Fix version printout in case of health issue
- 89d44f0a6c732db23b219be708e2fe1e03ee4842
mlx5_core: Add pci error handlers to mlx5_core driver

mlx5_cmd.c
- be87544de8df2b1eb34bcb5e32691287d96f9ec4
mlx5_core: Fix async commands return code
- a31208b1e11df334d443ec8cace7636150bb8ce2
mlx5_core: New init and exit flow for mlx5_core
- 020446e01eebc9dbe7eda038e570ab9c7ab13586
mlx5_core: Prepare cmd interface to system errors handling
- 89d44f0a6c732db23b219be708e2fe1e03ee4842
mlx5_core: Add pci error handlers to mlx5_core driver
- 0d834442cc247c7b3f3bd6019512ae03e96dd99a
mlx5: Fix teardown errors that happen in pci error handler

mlx5_main.c
- 5fc7197d3a256d9c5de3134870304b24892a4908
mlx5: Add pci shutdown callback

Submitted by: Matthew Finlay <matt@mellanox.com>
MFC after: 1 week
Sponsored by: Mellanox Technologies

Update the MLX5 core module:
- Add new firmware commands and update existing ones.
- Add more firmware related structures and update existing ones.
- Some minor fixes, like adding missing \n to some prints.

Sponsored by: Mellanox Technologies
MFC after: 1 week

Add mlx5 and mlx5en driver(s) for ConnectX-4 and ConnectX-4LX cards
from Mellanox Technologies. The current driver supports ethernet
speeds up to and including 100 GBit/s. Infiniband support will be
done later.

The code added is not compiled by default, which will be done by a
separate commit.

Sponsored by: Mellanox Technologies
MFC after: 2 weeks