XXXX introduce drv_sectohz

*** 164,174 ****
          /*
           * prevent detach of i2c-ssc050
           */
          e_ddi_hold_devi(keysw_dip);
  
!         keypoll_timeout_hz = drv_usectohz(10 * MICROSEC);
          keyswitch_poll(keysw_dip);
          abort_seq_handler = daktari_abort_seq_handler;
  }
  
  static int
--- 164,174 ----
          /*
           * prevent detach of i2c-ssc050
           */
          e_ddi_hold_devi(keysw_dip);
  
!         keypoll_timeout_hz = drv_sectohz(10);
          keyswitch_poll(keysw_dip);
          abort_seq_handler = daktari_abort_seq_handler;
  }
  
  static int