K 10
svn:author
V 6
andrew
K 8
svn:date
V 27
2020-06-29T09:08:36.861366Z
K 7
svn:log
V 348
Create a kernel arm64 ID register view

In preparation for using ifuncs in the kernel is is useful to have a common
view of the arm64 ID registers across all CPUs. Add this and extract the
logic for finding the lower value of two fields to a new helper function.

Sponsored by:	Innovate UK
Differential Revision:	https://reviews.freebsd.org/D25463

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