MFC r363564-r363567, r363575, r363835-r363837, r363842-r363843, r364232

r363564:
linuxkpi: Include linux/sizes.h in dma-mapping.h

Linux does the same, this avoids ifdef or extra includes in ported drivers.

Reviewed by: emaste, hselasky
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D25701

r363565:
linuxkpi: Include hardirq.h in preempt.h and lockdep.h in hardirq.h

Linux does the same, this avoids ifdef or extra includes in ported drivers.

Reviewed by: emaste, hselasky
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D25702

r363566:
linuxkpi: Add taint* defines

This isn't used for us but allow us to port drivers more easily.

Reviewed by: hselasky
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D25703

r363567:
Revert r363564

linux/sizes.h doesn't exists in base ... sorry.

r363575:
Fix r363565

lockdep.h needs sys/lock.h for LOCK_CLASS

r363835:
linuxkpi: Add linux/sizes.h

This file contain some defines for common sizes.

Sponsored-by: The FreeBSD Foundation
Reviewed by: hselasky, emaste
Differential Revision: https://reviews.freebsd.org/D25941

r363836:
linuxkpi: Add kref_put_lock

Same as kref_put but in addition to calling the rel function it will
acquire the lock first.

Sponsored by: The FreeBSD Foundation
Reviewed by: hselasky, emaste
Differential Revision: https://reviews.freebsd.org/D25942

r363837:
linuxkpi: Add nested variant of mutex_lock_interruptible

We don't do anything with the _nesteds variant so just call mutex_lock_interruptible

Sponsoredby: The FreeBSD Foundation
Reviewed by: hselasky
Differential Revision: https://reviews.freebsd.org/D25944

r363842:
linuxkpi: Add clear_bit_unlock

This calls clear_bit and adds a memory barrier.

Sponsored by: The FreeBSD Foundation

Reviewed by: hselasky
Differential Revision: https://reviews.freebsd.org/D25943

r363843:
linuxkpi: Add time_after32 and time_before32

This compare two 32 bits times

Sponsored by: The FreeBSD Foundation
Reviewed by: kib, hselasky
Differential Revision: https://reviews.freebsd.org/D25700

r364232:
linuxkpi: Add a few wait_bit functions

The linux function does a lot more than that as multiple waitqueue could be fetch
from a static table based on the hash of the argument but since in DRM it's only used
in one place just add a single variable.
We will probably need to change that in the futur but it's ok with DRM even with current
linux.

Reviewed by: hselasky
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D26054