in mii_layer/ruephy.c

in mii_layer/ruephy.c
- in ruephy_attach(), nuke unused macro ADD()
- in ruephy_reset(), only turn on BMCR_AUTOEN after mii_phy_reset(), since
  BMCR_S100 and BMCR_FDX are ignored if BMCR_AUTOEN is turned on.

in rue/if_rue.c
- in rue_miibus_statchg(), nuke "#if 0"ed code and comment, since
  1) when auto-negotiation is not enabled, BMCR_S100 or BMCR_FDX will be turned
     on/off before rue_miibus_statchg() is called (in ruephy_service())
  2) when auto-negotiation is enabled, BMCR_S100 and BMCR_FDX are ignored