Rename cache_concurrency to cache_line_concurrency

Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>

src/metadata/metadata_hash.c

@@ -1179,7 +1179,7 @@ static size_t ocf_metadata_hash_size_of(struct ocf_cache *cache)
 	/* Get additional part of memory footprint */
 
 	/* Cache concurrency mechnism */
-	size += ocf_cache_concurrency_size_of(cache);
+	size += ocf_cache_line_concurrency_size_of(cache);
 
 	return size;
 }