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>
diff --git a/include/sensorcommands.hpp b/include/sensorcommands.hpp
index 2a67d0c..e5bed10 100644
--- a/include/sensorcommands.hpp
+++ b/include/sensorcommands.hpp
@@ -74,9 +74,8 @@
     uint8_t enabled;
     uint8_t assertionsLSB;
     uint8_t assertionsMSB;
-    // deassertion events currently not supported
-    // uint8_t deassertionsLSB;
-    // uint8_t deassertionsMSB;
+    uint8_t deassertionsLSB;
+    uint8_t deassertionsMSB;
 };
 #pragma pack(pop)