wifi: mt76: mt7996: Decouple RRO logic from WED support

Decouple RRO logic from WED support in MT7996 driver in order to reuse
it when WED module is not available.

Signed-off-by: Rex Lu <rex.lu@mediatek.com>
Co-developed-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20250909-mt7996-rro-rework-v5-14-7d66f6eb7795@kernel.org


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