dt-bindings: reset: mt8188: add thermal reset control bit

To support reset of infra_ao, add the index of infra_ao reset of thermal
for MT8188.

Signed-off-by: Runyang Chen <runyang.chen@mediatek.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230525075011.7032-2-runyang.chen@mediatek.com


Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>