K 10
svn:author
V 6
obrien
K 8
svn:date
V 27
2022-02-15T03:28:12.223474Z
K 7
svn:log
V 456
random(4): Abstract loader entropy injection

Break random_harvestq_prime up into some logical subroutines.  The goal
is that it becomes easier to add other early entropy sources.

While here, drop pre-12.0 compatibility logic.  loader default configuration
should preload the file as expeced since 12.0.

(cherry picked from commit f19de0a945386bb941d3c0fd0e24790570d145ca)

Git Hash:   c4a13b1e38f52df68cf82f98c794bbaa305d4d3f
Git Author: cem@FreeBSD.org
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