Kernel prepatch 5.5-rc1

Linus has released the 5.5-rc1 kernelprepatch and closed the merge window for this development cycle. "Everything looks fairly regular - it's a tiny bit larger (in commitcounts) than the few last merge windows have been, but not biggerenough to really raise any eyebrows. And there's nothing particularlyodd in there either that I can think of: just a bit over half of thepatch is drivers, with the next big area being arch updates. Which ispretty much the rule for how things have been forever by now.Outside of that, the documentation and tooling (perf and selftests)updates stand out, but that's actually been a common pattern for awhile now too, so it's not really surprising either."