staging: gasket: Add performance scaling based on temperature

Perform periodic polling of apex temperature and scale down
its frequency if temperature is above one of defined trip points.
Added sysfs nodes to control related settings on per device basis.
Added module parameters to set allow setting default value for all
devices in system.

Signed-off-by: Leonid Lobachev <leonidl@google.com>
Change-Id: I5065282cba9f0888abd4086601bda89174f24705
1 file changed