MFC r217548:

MFC r217548:
  Rework RX filter programming by providing separate handler for
  DP8381[56] and SiS 900/7016 controllers.  After r212119, sis(4) no
  longer reinitializes controller if ALLMULTI/PROMISC was changed.
  However, RX filter handling code assumed some bits of the RX filter
  is programmed by driver initialization. This caused ALLMULTI/PROMISC
  configuration is ignored under certain conditions.
  Fix that issue by reprogramming all bits of RX filter register.
  While I'm here follow recommended RX filter programming steps
  recommended by National DP8381[56] data sheet(RX filter should be
  is disabled before programming).

  Reported by:	Paul Schenkeveld < freebsd () psconsult dot nl >
  Tested by:	Paul Schenkeveld < freebsd () psconsult dot nl >
  Approved by:	re (bz)

git-svn-id: svn://svn.freebsd.org/base/releng/8.2@217803 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f