MFC r253141:
When panicing due to the gjournal overflow, print the geom metadata
journal id.

Approved by:	re (rodrigc)
MFC r230453:

- Configurations in ipv6_prefix_IF should be recognized even if there is no
  ifconfig_IF_ipv6.

- DAD wait should be performed at once, not on a per-interface basis, if
  possible.  This fixes an issue that a system with a lot of IPv6-capable
  interfaces takes too long for booting.

Approved by:	re (glebius)
MFC 252576:
Don't perform the acpi_DeviceIsPresent() check for PCI-PCI bridges.  If
we are probing a PCI-PCI bridge it is because we found one by enumerating
the devices on a PCI bus, so the bridge is definitely present.  A few
BIOSes report incorrect status (_STA) for some bridges that claimed they
were not present when in fact they were.

While here, move this check earlier for Host-PCI bridges so attach fails
before doing any work that needs to be torn down.

PR:		kern/91594
Approved by:	re (marius)
Add cdrom.inf into CD/DVD installation media.  sysinstall(8) requires
this file to recognize the volume number.

Approved by:	re (marius)
MFC r253398:
Add a tunable to force disable MSI use for xhci(4).

Approved by:	re (delphij)
MFC r253280:
Only copy as much bytes as there in superblock, instead of the full
block copy, when copying the superblock into the snapshot.  UFS1 does
not align superblock on the block boundary, and bcopy runs off the end
of the buffer.

Approved by:	re (hrs)
Update stable/9 to -BETA1 status.

Approved by:	re (implicit)
Approved by:	kib (mentor, implicit)
Merge remote-tracking branch 'upstream-github/stable/9' into stable/9