Some chips, such as BCM6328, only require bcm7120-l2.  Some BCM7xxx STB
configurations only require brcmstb-l2.  Treat them as two separate
entities, and update the mach-bcm dependencies to reflect the change.
Signed-off-by: NKevin Cernekee <cernekee@gmail.com>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NFlorian Fainelli <f.fainelli@gmail.com>
Link: https://lkml.kernel.org/r/1415342669-30640-13-git-send-email-cernekee@gmail.comSigned-off-by: NJason Cooper <jason@lakedaemon.net>