Revert r330897:

This was intended to be a non-functional change. It wasn't. The commit
message was thus wrong. In addition it broke arm, and merged crypto
related code.

Revert with prejudice.

This revert skips files touched in r316370 since that commit was since
MFCed. This revert also skips files that require $FreeBSD$ property
changes.

Thank you to those who helped me get out of this mess including but not
limited to gonzo, kevans, rgrimes.

Requested by: gjb (re)

Partial merge of the SPDX changes

These changes are incomplete but are making it difficult
to determine what other changes can/should be merged.

No objections from: pfg

MFC r307067, r307068, r307087, r307088, r307089,
r307091, r307092, r307093, r307095, r307098,
r307115:

r307067:
Make intc driver compatible with upstream DTS

- Fix compatibility strings
- Properly decode upstream's two-cell interrupt specs. Our home-made dts
does not have two-cell interrupts so no need to preserve backward
compatibility

r307068:
Make Rapsberry Pi watchdog driver compatible with upstream DTS

- Fix compatibility strings
- Compensate the difference in base address for our custom DTS and
upstream one (for backward compatibility)

r307087:
Make sure intc is attached before interrupt consumers

If pass order is not specified devices are attached in the order they are
defined in dts. Some interrupt consumers may be defined before intc. Also
make sure intc interrupt-parent local_intc is attached before intc itself.

r307088:
Add compatible strings used in upstream dts files

r307089:
Make framebuffer driver compatible with upstream DT

- Add compatibility string
- Add simplebus as possible parent bus

r307091:
Add compatibility string from upstream DT

r307092:
Make BCM2835 GPIO driver compatible with upstream DT

- Add compatibility string
- Make reserverd and read-only properties optional

r307093:
Make BCM283x USB driver compatible with upstream DT

- Make resource allocation logic depend on compatibility string
to check what format of DTS node should be used - FreeBSD's or upstream

r307095:
Make VCHI driver compatible with upstream DT

- Add compatibility string
- Compensate difference in base address between our custom DTB and upstream one

r307098:
Make BCM28x USB driver compatible with upstream device tree

This should have been committed in r307093: resource allocation depends
on source of the device tree. upstream dts has extra interrupt that we can
ignore

r307115:
Fix typo in comment

Spotted by: loos

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

INTRNG - redefine struct intr_map_data to avoid headers pollution. Each
struct associated with some type defined in enum intr_map_data_type
must have struct intr_map_data on the top of its own definition now.
When such structs are used, correct type and size must be filled in.

There are three such structs defined in sys/intr.h now. Their
definitions should be moved to corresponding headers by follow-up
commits.

While this change was propagated to all INTRNG like PICs,
pic_map_intr() method implementations were corrected on some places.
For this specific method, it's ensured by a caller that the 'data'
argument passed to this method is never NULL. Also, the return error
values were standardized there.

Rename ARM_INTRNG and MIPS_INTRNG to INTRNG. This will help with machine
independent code that needs to know about INTRNG such as PCI drivers.

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

Rework bcm283x interrupt controller for INTRNG and enable it
on RPI-B by default.

Reviewed by: gonzo
Differential Revision: https://reviews.freebsd.org/D5809

Almost all copies of platform_mp_init_secondary just called
intr_pic_init_secondary. Replace them with a direct call. On BCM2836
and ARMADA XP we need to add this function, but it can be empty.

Reviewed by: ian, imp
Sponsored by: ABT Systems Ltd
Differential Revision: https://reviews.freebsd.org/D5460

Make interrupt dispatching MP safe. Use GPU interrupt bit in per-core
interrupt status register to process shared interrupts only if the bit
is active and only on core to which they are routed.

Reviewed by: imp, loos
Approved by: kib (mentor)
Differential Revision: https://reviews.freebsd.org/D3723

Add support for the Raspberry Pi 2. As the chip is based on the bcm2835 in
the Raspberry Pi B we support most of the devices are already supported,
however the base address has changed.

A few items are not working, or missing. The main ones are:
* DMA doesn't work in the sdhci driver.
* Enabling vchiq halts the boot, may be interrupt related.
* There is no U-Boot port yet so the DTB is embedded in the kernel.

The last point will make it difficult to boot FreeBSD, however there is
support for the Raspberry Pi 2 in the U-Boot git repo. As I have not tested
this it is left as an open task to create a port to build.

X-MFC: When the above issues are fixed
Sponsored by: ABT Systems Ltd

Reduce the diff between head and arm_intrng with the bcm2835 interrupt
controller.

Optimise reading of pending interrupt registers. If there are no
pending interrupt bits, skip the bit iteration loop.

Reviewed by: ian @

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.

Add barebone Raspberry Pi port. Supported parts:
- Interrupts controller
- Watchdog
- System timer
- Framebuffer (hardcoded resolution/bpp)