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

*** 61,71 ****
          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)
  
  /*
   * Per filter statistics.
   */
  struct sof_entry_kstat {
--- 61,71 ----
          kstat_named_t   sofks_defer_close_backlog;
          kstat_named_t   sofks_defer_close_failed_backlog_too_big;
  };
  
  #define SOF_GLOBAL_STAT_BUMP(s) \
!         atomic_inc_64(&sof_stat.sofks_##s.value.ui64)
  
  /*
   * Per filter statistics.
   */
  struct sof_entry_kstat {