* fixes:
  s390/smp: enforce lowcore protection on CPU restart
  s390/boot: fix absolute zero lowcore corruption on boot
  s390/hugetlb: fix prepare_hugepage_range() check for 2 GB hugepages
  s390: update defconfigs
  s390: fix nospec table alignments
  s390/mm: remove useless hugepage address alignment
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>