staging: gasket: apex: restore thermal control registers

After host suspend/resume operation device is power cycled and
loses all custom register settings.
All settings are restored on first device open except thermal
monitoring related settings.

Signed-off-by: Leonid Lobachev <leonidl@google.com>
Change-Id: I3a7c69efd919da0992c585874d7fe906a7768ee7