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 r308640:

Use the correct OF_getencprop over OF_getprop + fdt32_to_cpu to read
integer data from the device tree.

MFC r306902:

ARM: Remove unused includes.

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

Stop using machine/fdt.h in the arm kernel code when we don't need it.

Implement GPIO_GET_BUS() method for all GPIO drivers.

Add helper routines to deal with attach and detach of gpiobus and gpioc
devices that are common to all drivers.

Clean up and fix the device detach routine and the failure path on GPIO
drivers.

This paves the way for upcoming work.

Fix the handling of pull-up and pull-down for RK3188.

For this to work the driver needs to know the bank it has attached to since
the registers for the first 12 pins are at a different location.

Move the lock initialization to simplify the code.

Reduce the maximum number of pins for the Rockchip RK3188, this driver
isn't supposed to manage all the GPIO pins in the system from a single
instance, instead it will attach to each one of the four available GPIO
controllers and only deal with one bank at time (32 pins per bank).

Rework part of the driver to take advantage of that, this simplify the
code a lot.

Also fix a bug in rk30_gpio_get_function() which wouldn't return the
correct values.

While here fix a typo in register name.

Moves all the duplicate code to a single function.

Verify for invalid modes and unwanted flags before pass the new flags to
driver.

Make the GPIO children attach to the first unit available and not only to
unit 0.

It seems that this 'simplification' was copied to all GPIO drivers in tree.

This fix a bug where a GPIO controller could fail to attach its children
(gpioc and gpiobus) if another GPIO driver attach first.

Rename OF_xref_phandle() to OF_node_from_xref() and add a new function
that provides the inverse translation, OF_xref_from_node().

Discussed with: nwhitehorn

Rename platform_gpio_init to be SoC specific, and make it static as it's
only called from this file.

Switch to my freebsd.org emal address in copyright.

Approved by: stas (mentor)

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 gpio parse routines according to sys/boot/fdt/dts/bindings-gpio.txt.

Reviewed by: stas@

Remove #include <machine/frame.h> from all the arm code that doesn't
really need it. That would be almost everywhere it was included. Add
it in a couple files that really do need it and were previously getting
it by accident via another header.

Import basic support for Rockchip RK3188 SoC.

Reviewed by: ray@