wifi: mt76: mt76x2u: add TP-Link TL-WDN6200 ID to device table

[ Upstream commit 06cccc2ebbe6c8a20f714f3a0ff3ff489d3004bb ]

The TP-Link TL-WDN6200 "Driverless" version cards use a MT7612U chipset.

Add the USB ID to mt76x2u driver.

Signed-off-by: Icenowy Zheng <uwu@icenowy.me>
Link: https://patch.msgid.link/20250317102235.1421726-1-uwu@icenowy.me


Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Sasha Levin <sashal@kernel.org>