XXXX introduce drv_sectohz

*** 803,813 ****
           */
          if (taskq_dispatch(pppt_global.global_dispatch_taskq,
              pppt_tgt_dereg_task, tgt, KM_NOSLEEP) == NULL) {
                  /* Dispatch failed, try again later */
                  (void) timeout(pppt_tgt_dereg_retry, tgt,
!                     drv_usectohz(TGT_DEREG_RETRY_SECONDS * 1000000));
          }
  }
  
  static void
  pppt_tgt_dereg_task(void *arg)
--- 803,813 ----
           */
          if (taskq_dispatch(pppt_global.global_dispatch_taskq,
              pppt_tgt_dereg_task, tgt, KM_NOSLEEP) == NULL) {
                  /* Dispatch failed, try again later */
                  (void) timeout(pppt_tgt_dereg_retry, tgt,
!                     drv_sectohz(TGT_DEREG_RETRY_SECONDS));
          }
  }
  
  static void
  pppt_tgt_dereg_task(void *arg)