mac80211: use HE 6 GHz band capability and pass it to the driver

In order to handle 6 GHz AP side, take the HE 6 GHz band capability
data and pass it to the driver (which needs it for A-MPDU spacing
and A-MPDU length).

Link: https://lore.kernel.org/r/1589399105-25472-6-git-send-email-rmanohar@codeaurora.org


Co-developed-by: Rajkumar Manoharan <rmanohar@codeaurora.org>
Signed-off-by: Rajkumar Manoharan <rmanohar@codeaurora.org>
Link: https://lore.kernel.org/r/20200528213443.784e4890d82f.I5f1230d5ab27e84e7bbe88e3645b24ea15a0c146@changeid


Signed-off-by: Johannes Berg <johannes.berg@intel.com>