Kernel prepatch 4.0-rc2

The 4.0-rc2 kernel prepatch is out. "So rc2 missed the usual Sunday afternoon timing, because I spent mostof the weekend debugging an issue that happened on an old Mac Mini Ihave around, and I hate making even early -rc releases with problemson machines that I have direct access to. Even if it only affected oldmachines that actual developers are unlikely to have or at least use.Today I got the patch from Daniel Vetter to fix it, so instead ofdoing a Sunday evening rc2, it's a Tuesday morning one. Go get it. Itworks better for the delay."