wifi: mt76: mt7925: extend mt7925_mcu_sta_rate_ctrl_tlv with per-link STA

wifi: mt76: mt7925: extend mt7925_mcu_sta_rate_ctrl_tlv with per-link STA

Extend mt7925_mcu_sta_rate_ctrl_tlv 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.

Co-developed-by: Ming Yen Hsieh <mingyen.hsieh@mediatek.com>
Signed-off-by: Ming Yen Hsieh <mingyen.hsieh@mediatek.com>
Co-developed-by: Deren Wu <deren.wu@mediatek.com>
Signed-off-by: Deren Wu <deren.wu@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Link: https://patch.msgid.link/20240613030241.5771-27-sean.wang@kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>