Merge remote-tracking branch 'qemu-kvm/uq/master' into staging

* qemu-kvm/uq/master:
  kvmclock: guest stop notification
  kvm: update linux headers
  kvm: set gsi_bits and max_gsi correctly
  kvm: Drop unused kvm_pit_in_kernel
  kvm: allow arbitrarily sized mmio ioeventfd
  kvm: Drop redundant kvm_enabled from cpu_thread_is_idle
  kvm: add flightrecorder script