K 10
svn:author
V 6
kevans
K 8
svn:date
V 27
2018-06-14T17:36:02.179898Z
K 7
svn:log
V 298
aw_ccung: Support clock factors where factor=0, factor is effectively 1

This happens in two cases for a20 clocks:

pll_core for 'n' factor:
factor=0, val=1
factor=n, val=n

ahb divisor:
factor=0,val=/2
factor=n,val=/2^n

Reviewed by:	manu
Differential Revision:	https://reviews.freebsd.org/D15806

END