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

Return the struct intr_pic pointer from intr_pic_register. This will be
needed in later changes where we may not be able to lock the pic list lock
to perform a lookup, e.g. from within interrupt context.

Obtained from: ABT Systems Ltd
Sponsored by: The FreeBSD Foundation

Add proper PCIe init for MT7628/MT7688 SoCs

PCIe PHY needs different initialization on MT7628/MT7688 SoCs than it does
on MT7620.
However, LEDE (and OpenWRT) dts files have the PCIe node for MT7628/MT7688
as compatible with mt7620-pci.
We already can handle this properly in our driver, so we just need to add
compat strings to fbsd-mt7628an.dtsi and the PCIe driver.

Approved by: adrian (mentor)
Sponsored by: Smartcom - Bulgaria AD
Differential Revision: https://reviews.freebsd.org/D6395

Add compat strings used by OpenWRT to some Mediatek/Ralink drivers

Approved by: adrian (mentor)
Sponsored by: Smartcom - Bulgaria AD
Differential Revision: https://reviews.freebsd.org/D5995

Mediatek/Ralink: Get our drivers closer to OpenWRT dts definitions

This revision gets our Mediatek/Ralink drivers closer to OpenWRT's dts
definitions, so we can reuse them with less modifications later in order
to bring support for a lot of boards at once.

Approved by: adrian (mentor)
Sponsored by: Smartcom - Bulgaria AD
Differential Revision: https://reviews.freebsd.org/D5961

Move Mediatek/Ralink PCIe to NEW_PCIB

This revision fixes minor issues and moves the Mediatek/Ralink PCIe
support to use NEW_PCIB.

https://svnweb.freebsd.org/changeset/base/297849 is the other part of
this changeset.

Approved by: adrian (mentor)
Sponsored by: Smartcom - Bulgaria AD
Differential Revision: https://reviews.freebsd.org/D5908

Introduce Mediatek/Ralink PCIe support

This revision introduces PCIe support for the relevant Mediatek/Ralink
SoCs.
Currently the PCIe support is not converted to INTRNG, this may be a
task for the future.

Approved by: adrian (mentor)
Sponsored by: Smartcom - Bulgaria AD
Differential Revision: https://reviews.freebsd.org/D5886