Merge branch 'features' into for-next

Merge branch 'features' into for-next

* features:
  s390: disable SSP when needed
  s390/ap/zcrypt: notify userspace with online, config and mode info
  s390/ccwgroup: use BUS_NOTIFY_UNBOUND_DRIVER to trigger ungrouping
  s390/ccwgroup: simplify ungrouping when driver deregisters
  s390/vfio-ap: clean up vfio_ap_drv's definition
  s390/ap: extend AP change bindings-complete uevent with counter
  s390/smp: remove redundant pcpu::lowcore member
  s390/smp: do not preserve boot CPU lowcore on hotplug
  s390/smp: reallocate IPL CPU lowcore
  s390/mm: ensure switch_mm() is executed with interrupts disabled
  s390/boot: access kernel command line via parmarea
  s390/ipl: make parameter area accessible via struct parmarea
  s390/sclp_vt220: fix console name to match device
  s390/ccwgroup: release the cdevs from within dev->release()
  s390/ap: wire up bus->probe and bus->remove
  s390/zcrypt: remove zcrypt_device_count
  s390/crypto: fix function/prototype mismatches
  s390/traps: add struct to access transactional diagnostic block
  s390/cio: add union/struct to access tpi_info
  s390/irq: add union/struct to access io interrupt data
  s390/irq: add union/struct to access external interrupt parameters
  s390/facilities: move stfl information from lowcore to global data
  s390/entry: use assignment to read intcode / asm to copy gprs
  s390: enable HAVE_IOREMAP_PROT
  s390/cpumf: remove WARN_ON_ONCE in counter start handler
  s390/cpumf: remove counter transaction call backs

Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>