K 10
svn:author
V 3
cem
K 8
svn:date
V 27
2017-09-07T20:20:12.334995Z
K 7
svn:log
V 320
cpufreq(4) hwpstate: Yield CPU awaiting frequency change

It doesn't seem necessary to busy the CPU while waiting to transition
into a different p-state.

PR:		221621 (related, but does not completely address)
Reviewed by:	truckman
Sponsored by:	Dell EMC Isilon
Differential Revision:	https://reviews.freebsd.org/D12260

END