Extend mt7925_mcu_sta_update with the per-link STA configuration.

The patch we created is a prerequisite to enable the MLO function in the
driver. It is purely a refactoring patch so the functionality should
remain unchanged.
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Link: https://patch.msgid.link/20240613030241.5771-25-sean.wang@kernel.orgSigned-off-by: Felix Fietkau <nbd@nbd.name>