Add fanctl to skeleton

fanctl replaces pyfanctl. It provides fan control service with
dbus object "/org/openbmc/control/fans".

Currently there are two methods: setMax() to set all fans' speed to maximum,
and updatePresent() to update the "Present" status of inventory objects:
"/org/openbmc/inventory/system/chassis/fan*".

In future, more methods will be added, like setting fan speed based on
temperature sensor reading.

Fixes openbmc/openbmc#93

Change-Id: Ic65089f5d0538cd5e17cfcd9f27e652ae6080ec5
Signed-off-by: Yi Li <adamliyi@msn.com>
8 files changed