Kernel prepatch 7.1-rc5

I'm not entirely happy about it - most of this is totally trivial
stuff to random drivers, which obviously makes it all less scary,
but at the same time I'm really not convinced the churn is worth it
at rc5 time. These things are "fixes", sure, but at the same time a
lot of them are simply so irrelevant that I think they'd be better
off in a linux-next tree and get merged during the merge window.

So I think I'll start being a bit more hardnosed about this kind of
unnecessary churn this late in the game. We are supposed to look
for *regressions*. Non-critical fixes to long-standing issues are
simply not appropriate for this late in the release cycle.

End result: this is too big, and this is the heads-up that I'll be
pushing back on pointless pull requests with fixes that just aren't
that important. And yes, several of these series were triggered by
AI code review.