On 6 GHz, the 6 GHz capabilities element should be added, do that.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
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Link: https://lore.kernel.org/r/20200528213443.8ee764f0cde0.I2b0c66b60e11818c97c9803e04a6a197c6376243@changeidSigned-off-by: Johannes Berg <johannes.berg@intel.com>