wifi: mt76: connac: adjust phy capabilities based on band constraints

Adjust HE and EHT phy capabilities based on the band constraints.
For 2g band, we shall not enable the capabilities above 40MHz.

Signed-off-by: Howard Hsu <howard-yh.hsu@mediatek.com>
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Link: https://patch.msgid.link/20250114101026.3587702-5-shayne.chen@mediatek.com


Signed-off-by: Felix Fietkau <nbd@nbd.name>