Log Message:
Update to 4.11.4nb1
Keep PKGREVISION at 1 to reflect that it's not a stock Xen 4.11.4 kernel,
we have additinnal security fixes (all relevant patches from upstream to
date).
Changes: mosly bug fixes and improvements; better support for newer AMD CPUs.
full changelog at https://xenproject.org/downloads/xen-project-archives/xen-proj
ect-4-11-series/xen-project-4-11-4/