Reintegrate head revisions r273096-r277147

Sponsored by: The FreeBSD Foundation

Add 64-bit DMA support in the XHCI controller driver.
- Fix some comments and whitespace while at it.

MFC after: 1 month
Submitted by: marius@

MFC @ r266724

An SVM update will follow this.

IFC @266473

Merge head

Stop calling imx51_ccm_foo() clock functions from imx6 code. Instead
define a few imx_ccm_foo() functions that are implemented by the imx51 or
imx6 ccm code. Of course, the imx6 ccm code is still m

Stop calling imx51_ccm_foo() clock functions from imx6 code. Instead
define a few imx_ccm_foo() functions that are implemented by the imx51 or
imx6 ccm code. Of course, the imx6 ccm code is still more a wish than
reality, so for now its implementations just return hard-coded numbers.

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IFC @264767

MFH: tracking commit

Sponsored by: The FreeBSD Foundation

Merge head up to r262222 (last merge was incomplete).

MFC @ r259205 in preparation for some SVM updates. (for real this time)

Follow r261352 by updating all drivers which are children of simplebus
to check the status property in their probe routines.

Simplebus used to only instantiate its children whose status="okay"
but t

Follow r261352 by updating all drivers which are children of simplebus
to check the status property in their probe routines.

Simplebus used to only instantiate its children whose status="okay"
but that was improper behavior, fixed in r261352. Now that it doesn't
check anymore and probes all its children; the children all have to
do the check because really only the children know how to properly
interpret their status property strings.

Right now all existing drivers only understand "okay" versus something-
that's-not-okay, so they all use the new ofw_bus_status_okay() helper.

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Merge head r232040 through r257457.
M usr.sbin/portsnap/portsnap/portsnap.8
M usr.sbin/portsnap/portsnap/portsnap.sh
M usr.sbin/tcpdump/tcpdump/Makefile

Rework the imx ehci driver so that it's four separate ehci units rather
than one unit with four busses attached to it. This allows us to use
existing fdt data which describes separate devices with s

Rework the imx ehci driver so that it's four separate ehci units rather
than one unit with four busses attached to it. This allows us to use
existing fdt data which describes separate devices with separate resources.
It also allows any combination of the units to be en/disabled in the
board dts files.

Adjust our dts code to match what's used by linux and u-boot now that
we're structured to do so.

Document lots of interesting stuff learned whiling doing this with a big
comment block in the driver, so I don't have to re-learn it for the next
round of changes.

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IFC @253398

Merge fresh head.

sync from head

Integrate Efika MX project back to home.

Sponsored by: The FreeBSD Foundation