Linux 4.0 rc7

So rc7 is a day late, delayed by easter dinner. To compensate, it got
a few extra fixes.

But it’s still pretty small, and things are on track for 4.0 next
weekend. There’s a tiny chance that I’ll decide to delay 4.0 by a week
just because I’m traveling the week after, and I might want to avoid
opening the merge window. We’ll see how I feel about it next weekend.

Anyway, nothing particularly odd here in rc7. It’s about three
quarters driver updates (the bulk of it being network drivers, but
there’s stuff all over: gpu, iio, input, usb…).  The rest is some
small x86 fixes, some networking, a lazytime fix and documentation.
And all of it is pretty small