cfg80211: Add support for HE

Add support for the HE in cfg80211 and also add userspace API to
nl80211 to send rate information out, conforming with P802.11ax_D2.0.

Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Ido Yariv <idox.yariv@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Change-Id: Ic538dc9fccc0b5a68da6083bd1dfc31901d6c0ca
CRs-Fixed: 2666285
Git-commit: c4cbaf7973a794839af080f13748335976cf3f3f
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next.git


Signed-off-by: Paul Zhang <paulz@codeaurora.org>
Signed-off-by: Wade Song <wadesong@codeaurora.org>