mt76x0: init hw capabilities

commit 0ae976a1 upstream.

Enable hw capabilities supported by mt76-usb layer
- fast_xmit
- tx/rx amsdu
- MFP
- non-linear tx skbs

[This is one line hw feature backport from 0ae976a1 ("mt76x0: init
hw capabilities"), which add also other different features, however
those are not supported in 4.19.

802.11w is supported by mac80211 and mt76x0u driver in 4.19 correctly
fall-back to software encryption when 802.11w ciphers are used.

Without the patch we fail to associate with WPA3 APs, so this is
considered as fix.]

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
[remove marking non-working features on 4.19, make topic correspond the change]
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>