Kernel prepatch 4.18-rc3

The 4.18-rc3 kernel prepatch is out fortesting. "And things look fairly normal - a bit over a third isdrivers (various parts: input, usb, sound, gpu, mtd, networking, ...), withthe rest being arch updates (arm/arm64 - dts files dominating, microblaze,powerpc, x86), filesystems (xfs, some btrfs, some minor core vfs),networking, documentation updates and tooling."