iwlwifi: split HE capabilities between AP and STA

HE capabilities differ between AP and STA.

Signed-off-by: Shaul Triebitz <shaul.triebitz@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Git-commit: 57a3a454f30368f9b52ef406feff09571448e84e
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next.git


CRs-Fixed: 2743684
Change-Id: I4886fa9f42ae9f8dd3ff3c7176c495ec26b62791
Signed-off-by: Vinita S. Maloo <vmaloo@codeaurora.org>