Linux staging-5.15-rc1

IIO / Staging driver update for 5.15-rc1
Here is the big set of staging and IIO driver updates for 5.15-rc1.
Also included in here are the counter driver subsystem updates as the
IIO drivers needed them.

Lots of churn in some staging drivers, we dropped the "old" rtl8188eu
driver and replaced it with a newer version of the driver that had been
maintained out-of-tree by Larry with the end goal of actually being able
to get this driver out of staging eventually. Despite that driver being
"newer" the line count of this pull request is going up.

Some drivers moved out of staging as well, which is always nice to see,
that is why there are additions to the mfc and misc driver subsystems.
All of these were acked by the various subsystem maintainers involved.

But by far, as normal, it's coding style cleanups all over the
drivers/staging/ tree in here.

Full details of these changes are in the shortlog.

All of these have been in linux-next for a while with no reported
problems.

Signed-off-by: Greg Kroah-Hartman <[email protected]>