XXXX introduce drv_sectohz

*** 1608,1618 ****
                  while ((sp->session_state == RDS_SESSION_STATE_HCA_CLOSING) ||
                      (sp->session_state == RDS_SESSION_STATE_ERROR) ||
                      (sp->session_state == RDS_SESSION_STATE_PASSIVE_CLOSING) ||
                      (sp->session_state == RDS_SESSION_STATE_CLOSED)) {
                          rw_exit(&sp->session_lock);
!                         delay(drv_usectohz(1000000));
                          rw_enter(&sp->session_lock, RW_READER);
                          RDS_DPRINTF2("rdsib_del_hca", "SP(%p) State: %d", sp,
                              sp->session_state);
                  }
  
--- 1608,1618 ----
                  while ((sp->session_state == RDS_SESSION_STATE_HCA_CLOSING) ||
                      (sp->session_state == RDS_SESSION_STATE_ERROR) ||
                      (sp->session_state == RDS_SESSION_STATE_PASSIVE_CLOSING) ||
                      (sp->session_state == RDS_SESSION_STATE_CLOSED)) {
                          rw_exit(&sp->session_lock);
!                         delay(drv_sectohz(1));
                          rw_enter(&sp->session_lock, RW_READER);
                          RDS_DPRINTF2("rdsib_del_hca", "SP(%p) State: %d", sp,
                              sp->session_state);
                  }