This patch cleans up hwmon sysfs documentation file, plus introduces
the description of DC/PWM selection for fan speed control.
Signed-off-by: NRudolf Marek <r.marek@sh.cvut.cz>
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>