wifi: mt76: mt7921: enable p2p support

Introduce p2p-go/p2p-client support to mt7921 driver

CONNECTION_P2P_GC/GO is not supported with the current firmware
so we added mt76_dev to mt76_connac_mcu_sta_basic_tlv signature to
use CONNECTION_INFRA_STA/AP instead for p2p-client and p2p-go
respectively to make it work.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>