Copy stable/11@r303970 to releng/11.0 as part of the 11.0-RELEASE
cycle.

Prune svn:mergeinfo from the new branch, and rename it to RC1.

Update __FreeBSD_version.

Use the quarterly branch for the default FreeBSD.conf pkg(8) repo and
the dvd1.iso packages population.

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

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

As <machine/vm.h> is included from <vm/vm.h>, there is no need to
include it explicitly when <vm/vm.h> is already included.

Reviewed by: alc, kib
Differential Revision: https://reviews.freebsd.org/D5380

Merge from CheriBSD (2e28d2a3090239b30481f35dc452ad95a5c57389)

Remove initalized, but unused devname variable

MFC after: 1 week
Sponsored by: DARPA, AFRL

Merge Perforce changeset 219952 to head:

Make different bus attachments for Altera and Terasice
device drivers share the same devclass_t.

Sponsored by: DARPA, AFRL

Merge Perforce changeset 219940 to head:

Rework altera_avgen(4) to cleanly(ish) separate nexus bus
attachment from the driver itself. This should allow us to
plug in an fdt attachment more easily.

Sponsored by: DARPA, AFRL

Add altera_avgen(4), a generic device driver to be used by hard and soft
CPU cores on Altera FPGAs. The device driver allows memory-mapped devices
on Altera's Avalon SoC bus to be exported to userspace via device nodes.
device.hints directories dictate device name, permissible access methods,
physical address and length, and I/O alignment. Devices can be accessed
using read(2)/write(2), but also memory mapped in userspace using mmap(2).

Devices attach directly to the Nexus, as is common for embedded device
drivers; in the future something more mature might be desirable. There is
currently no facility to support directing device-originated interrupts to
userspace.

In the future, this device driver may be renamed to socgen(4), as it can
in principle also be used with other system-on-chip (SoC) busses, such as
Axi on ASICs and FPGAs. However, we have only tested it on Avalon busses
with memory-mapped ROMs, frame buffers, etc.

Sponsored by: DARPA, AFRL