Comment 1 for bug 1799184

According to
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1784331/comments/5
the three needed commits are:
1) Git-commit: ac2b96f351d7d222
   s390/zcrypt: code beautify"
2) Git-commit 7e0bdbe5c21cb831
   s390/zcrypt: AP bus support for alternate driver(s)"
3) Git-commit 3d8f60d38e249f98 s390/zcrypt:
   hex string mask improvements for apmask and aqmask
Hope they cleanly apply to 4.15, too.