cfg80211: enable TDLS on P2P client interfaces

There's no reason TDLS should be prevented on P2P client
interfaces, and most of the code already handles it, so
allow adding stations for it.
Reported-by: NJouni Malinen <j@w1.fi>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

net/wireless/nl80211.c

@@ -4051,6 +4051,7 @@ static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
 			return -EINVAL;
 		break;
 	case NL80211_IFTYPE_STATION:
+	case NL80211_IFTYPE_P2P_CLIENT:
 		/* ignore uAPSD data */
 		params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;