dt-bindings: rockchip: pmu: Add rk3562 compatible

Add the compatible for the pmu mfd on rk3562.

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Acked-by: "Rob Herring (Arm)" <robh@kernel.org>
Link: https://lore.kernel.org/r/20250509102308.761424-2-kever.yang@rock-chips.com


Signed-off-by: Heiko Stuebner <heiko@sntech.de>