Make management API asynchronous

NOTE: This patch only changes API that pretends to be asynchronous.
Most of management operations are still performed synchronously.
The real asynchronism will be introduced in the next patches.

Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>

src/utils/utils_req.c

@@ -157,7 +157,7 @@ static void start_cache_req(struct ocf_request *req)
 
 	req->d2c = 1;
 	if (env_atomic_read(&cache->attached)) {
-		req->d2c = 0		;
+		req->d2c = 0;
 		env_atomic_inc(&cache->pending_cache_requests);
 		if (!env_atomic_read(&cache->attached)) {
 			req->d2c = 1;