Merge remote-tracking branch 'remotes/cohuck/tags/s390x-20180301-v2' into staging

- add query-cpus-fast and deprecate query-cpus, while adding s390 cpu
  information
- remove s390x memory hotplug implementation, which is not useable in
  this form
- add boot menu support in the s390-ccw bios
- expose s390x guest crash information
- fixes and cleaups

# gpg: Signature made Thu 01 Mar 2018 12:54:47 GMT
# gpg:                using RSA key DECF6B93C6F02FAF
# gpg: Good signature from "Cornelia Huck <[email protected]>"
# gpg:                 aka "Cornelia Huck <[email protected]>"
# gpg:                 aka "Cornelia Huck <[email protected]>"
# gpg:                 aka "Cornelia Huck <[email protected]>"
# gpg:                 aka "Cornelia Huck <[email protected]>"
# Primary key fingerprint: C3D0 D66D C362 4FF6 A8C0  18CE DECF 6B93 C6F0 2FAF

* remotes/cohuck/tags/s390x-20180301-v2: (27 commits)
  s390x/tcg: fix loading 31bit PSWs with the highest bit set
  s390x: remove s390_get_memslot_count
  s390x/sclp: remove memory hotplug support
  s390x/cpumodel: document S390FeatDef.bit not applicable
  hmp: change hmp_info_cpus to use query-cpus-fast
  qemu-doc: deprecate query-cpus
  qmp: add architecture specific cpu data for query-cpus-fast
  qmp: add query-cpus-fast
  qmp: expose s390-specific CPU info
  s390x/tcg: add various alignment checks
  s390x/tcg: fix disabling/enabling DAT
  s390/stattrib: Make SaveVMHandlers data static
  s390x/cpu: expose the guest crash information
  pc-bios/s390: Rebuild the s390x firmware images with the boot menu changes
  s390-ccw: interactive boot menu for scsi
  s390-ccw: use zipl values when no boot menu options are present
  s390-ccw: set cp_receive mask only when needed and consume pending service irqs
  s390-ccw: read user input for boot index via the SCLP console
  s390-ccw: print zipl boot menu
  s390-ccw: read stage2 boot loader data to find menu
  ...

Signed-off-by: Peter Maydell <[email protected]>