PNOR: Switch Software Version based on priority.

If the user specifically sets the priority of a version
to the lowest value, then we need to update the symlinks
and change PNOR current version.

Change-Id: I8bb46800e30ec0afd7726cceb8566915a48b5e88
Signed-off-by: Saqib Khan <khansa@us.ibm.com>
diff --git a/item_updater.hpp b/item_updater.hpp
index 2a71905..213b456 100755
--- a/item_updater.hpp
+++ b/item_updater.hpp
@@ -51,6 +51,15 @@
          */
         void freePriority(uint8_t value);
 
+        /** @brief Determine is the given priority is the lowest
+         *
+         *  @param[in] value - The priority that needs to be checked.
+         *
+         *  @return boolean corresponding to whether the given
+         *           priority is lowest.
+         */
+        bool isLowestPriority(uint8_t value);
+
         /**
          * @brief Create and populate the active PNOR Version.
          */