mt76: mt76u: add mt76_queue to mt76u_get_next_rx_entry signature

Rely on mt76_queue pointer in mt76u_get_next_rx_entry in order to add
support for new devices (e.g 7663u) that reports fw events through hw rx
mcu queue

Co-developed-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>