K 10
svn:author
V 5
kibab
K 8
svn:date
V 27
2020-07-24T21:14:59.102207Z
K 7
svn:log
V 403
Make it possible to get/set MMC frequency from camcontrol

Enhance camcontrol(8) so that it's possible to manually set frequency for SD/MMC cards.
While here, display more information about the current controller, such as
supported operating modes and VCCQ voltages, as well as current VCCQ voltage.

Reviewed by:	manu
Approved by:	imp (mentor)
Differential Revision:	https://reviews.freebsd.org/D25795

END