Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

bhnd(4): Fix mips/broadcom core matching and bus pass order.

Changes:

- Fixed incorrect MIPS74k vendor ID in the bhnd core descriptor tables
- Fixed MIPS core driver's matching against MIPS/MIPS33 cores.
- Improved MIPS3302 core description.
- Enabled BUS_PASS_BUS on the bhnd nexus drivers to allow early probing
of the MIPS core.
- Enabled BUS_PASS_CPU on the MIPS core driver to ensure correct attach
order.
- Disabled matching of the MIPS core driver on non-SoC devices.

Reviewed by: Michael Zhilin <mizhka@gmail.com>
Approved by: adrian (mentor)
Differential Revision: https://reviews.freebsd.org/D6735

bhnd(4): Add a vendor parameter to BHND_DEVICE(), replacing vendor-specific
BHND_*_DEVICE macros.

Approved by: adrian (mentor)
Differential Revision: https://reviews.freebsd.org/D6736

[mips/broadcom] Add initial code for interrupts on the Broadcom MIPS processor

Broadcom MIPS processor doesn't reset TI flag if additional manipulation
is done.

Thanks to @sobomax!