5045 use atomic_{inc,dec}_* instead of atomic_add_*

@@ -61,11 +61,11 @@
         kstat_named_t   sofks_defer_close_backlog;
         kstat_named_t   sofks_defer_close_failed_backlog_too_big;
 };
 
 #define SOF_GLOBAL_STAT_BUMP(s) \
-        atomic_add_64(&sof_stat.sofks_##s.value.ui64, 1)
+        atomic_inc_64(&sof_stat.sofks_##s.value.ui64)
 
 /*
  * Per filter statistics.
  */
 struct sof_entry_kstat {