iwlwifi: mvm: fix ieee80211_get_he_iftype_cap() iftype

We should consider the P2P interface type, which isn't in
vif->type due to mac80211's special handling of that. Use
ieee80211_vif_type_p2p() to convert appropriately.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20211017113927.8e992a3beee2.I4231ac8a7ae8f844e35a1ec221baf3e2b676e765@changeid


Signed-off-by: Luca Coelho <luciano.coelho@intel.com>