Comment 32 for bug 873117

SRU request:

Please accept bcmwl (5.100.82.38+bdcom-0ubuntu6.1) in proposed:
  * debian/bcmwl-kernel-source.postinst:
    - Blacklist brcmfmac, brcmsmac and bcma so that they don't
      conflict with the closed driver (LP: #873117)

Testing this change it's very straightforward since it will allow the close broadcom to load properly when the open drivers are blacklisted.