XXXX introduce drv_sectohz

*** 628,638 ****
          }
          dkp->dk_flag |= CMDK_SUSPEND;
  
          /* need to wait a while */
          while (dadk_getcmds(DKTP_DATA) != 0) {
!                 delay(drv_usectohz(1000000));
                  if (count > 60) {
                          dkp->dk_flag &= ~CMDK_SUSPEND;
                          cv_broadcast(&dkp->dk_suspend_cv);
                          mutex_exit(&dkp->dk_mutex);
                          return (DDI_FAILURE);
--- 628,638 ----
          }
          dkp->dk_flag |= CMDK_SUSPEND;
  
          /* need to wait a while */
          while (dadk_getcmds(DKTP_DATA) != 0) {
!                 delay(drv_sectohz(1));
                  if (count > 60) {
                          dkp->dk_flag &= ~CMDK_SUSPEND;
                          cv_broadcast(&dkp->dk_suspend_cv);
                          mutex_exit(&dkp->dk_mutex);
                          return (DDI_FAILURE);