control: Remove references to "speed" in JSON objects

Fan control can be configured to control any type of fan where "speed"
implies a fan control by setting RPMs. However, fans that are PWM
driven, can also be configured to be controlled so the preference would
be to not specific refer to setting "speeds".

Change-Id: Ia8920832ea29b519bf408c850febb3fed04ad3f9
Signed-off-by: Matthew Barth <msbarth@us.ibm.com>
7 files changed