Add sensor deassert tracking

Get sensor event status command needs this information.

Tested: Used sensor override and made fan cross a threshold,
then go back. Get sensor event status command had correct
bits set.

Change-Id: I8d8c7203ea6cb1d0e467f6267445e2d7395426a6
Signed-off-by: James Feist <james.feist@linux.intel.com>
2 files changed