XXXX introduce drv_sectohz

*** 4119,4129 ****
                   * hphase goes to VH_DONE(below) or channel is reset due to
                   * errors or vgen_ldc_uninit() is invoked(vgen_stop).
                   */
                  ASSERT(ldcp->htid == 0);
                  ldcp->htid = timeout(vgen_hwatchdog, (caddr_t)ldcp,
!                     drv_usectohz(vgen_hwd_interval * MICROSEC));
  
                  /* Phase 1 involves negotiating the version */
                  rv = vgen_send_version_negotiate(ldcp);
                  break;
  
--- 4119,4129 ----
                   * hphase goes to VH_DONE(below) or channel is reset due to
                   * errors or vgen_ldc_uninit() is invoked(vgen_stop).
                   */
                  ASSERT(ldcp->htid == 0);
                  ldcp->htid = timeout(vgen_hwatchdog, (caddr_t)ldcp,
!                     drv_sectohz(vgen_hwd_interval));
  
                  /* Phase 1 involves negotiating the version */
                  rv = vgen_send_version_negotiate(ldcp);
                  break;