K 10
svn:author
V 4
mmel
K 8
svn:date
V 27
2019-11-08T19:15:50.504251Z
K 7
svn:log
V 226
Tidy up Rockchip composite clock.
- add support for log2 based dividers
- use proper write mask when writing to divider register

MFC after:	3 weeks
Reviewed by:	manu
Differential Revision:  https://reviews.freebsd.org/D22283

END