Introduce core_is_dirty mngt method

Signed-off-by: Michal Rakowski <michal.rakowski@intel.com>

inc/ocf_mngt.h

@@ -605,6 +605,15 @@ typedef void (*ocf_mngt_cache_flush_end_t)(ocf_cache_t cache,
 void ocf_mngt_cache_flush(ocf_cache_t cache,
 		ocf_mngt_cache_flush_end_t cmpl, void *priv);
 
+/**
+ * @brief Check if core is dirty
+ *
+ * @param[in] core Core handle
+ *
+ * @retval true if core is dirty, false otherwise
+ */
+bool ocf_mngt_core_is_dirty(ocf_core_t core);
+
 /**
  * @brief Check if cache is dirty
  *