HACK: bcmdhd: fix for compile with 3.2+

Disable the removed set_beacon/add_beacon interface, and add the
new dBm parameter to cfg80211_rx_mgmt.

Change-Id: Id68530e978886ef482bce51cc8233ffa76a86c5a
Signed-off-by: Colin Cross <ccross@android.com>

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Use ndo_set_rx_mode instead of ndo_set_multicast_list on Linux 3.2+