HWSIM_ATTR_SUPPORT_P2P_DEVICE
ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
[HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },