Open sensor hub when module is loaded and close when module is removed.
This helps saving power by opening HID transport only when there is an
user.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>