psu-ng: Refactor temperature fault detection

Split off temperature fault checking of STATUS_WORD into its own
function.

Change-Id: Ia7dc08af12647cc7ca76356c9e9d2b75e2e95f56
Signed-off-by: Brandon Wyman <bjwyman@gmail.com>
diff --git a/phosphor-power-supply/power_supply.hpp b/phosphor-power-supply/power_supply.hpp
index 3cb5a6d..04d73f7 100644
--- a/phosphor-power-supply/power_supply.hpp
+++ b/phosphor-power-supply/power_supply.hpp
@@ -491,6 +491,11 @@
     size_t readFail = 0;
 
     /**
+     * @brief Examine STATUS_WORD for temperature fault.
+     */
+    void analyzeTemperatureFault();
+
+    /**
      * @brief Examine STATUS_WORD for pgood or unit off faults.
      */
     void analyzePgoodFault();