MFC r283291: don't use CALLOUT_MPSAFE with callout_init()

The main purpose of this MFC is to reduce conflicts for other merges.
Parts of the original change have already "trickled down" via individual MFCs.

MFC r308464, r308471: Add some device IDs found in my new laptop.

MFC r298983: Add some device IDs from Intel Sunrise Point chipsets.

MFC r297387: Add some device IDs found on AMD FCH shipsets.

MFC r281544:
snd_hda: add support for the Lenovo X1 20BS model.

This requires a patch to redirect the output to a separate DAC when
the headphones are used. While there, add device strings for Intel
Broadwell HDA controllers and Realtek ALC292 codecs.

MFC r275101:
Add bunch of PCI IDs of Intel Wildcat Point (9 Series) chipsets.

MFC: r264832

- Sprinkle const and static as appropriate.
- Convert the remainder of snd_hda(4) to take advantage of nitems().
- Use DEVMETHOD_END.
- Use NULL instead of 0 for pointers.

MFC r258168, r258170:
Add some more Intel HDA controller and CODEC IDs.

MFC r281544:
snd_hda: add support for the Lenovo X1 20BS model.

This requires a patch to redirect the output to a separate DAC when
the headphones are used. While there, add device strings for Intel
Broadwell HDA controllers and Realtek ALC292 codecs.

MFC r275101:
Add bunch of PCI IDs of Intel Wildcat Point (9 Series) chipsets.

MFC: r264832

- Sprinkle const and static as appropriate.
- Convert the remainder of snd_hda(4) to take advantage of nitems().
- Use DEVMETHOD_END.
- Use NULL instead of 0 for pointers.

MFC r258168, r258170:
Add some more Intel HDA controller and CODEC IDs.