Add mt7992_offs to differentiate registers that share the same
definitions with mt7996 chipsets but have differnet offsets.
This is a preliminary patch for mt7992 chipsets support.
Signed-off-by: StanleyYP Wang <StanleyYP.Wang@mediatek.com>
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>