dt-bindings: power: reset: bcm21664-resetmgr: convert to YAML

Convert Broadcom Kona family reset manager bindings to DT schema.

Signed-off-by: Stanislav Jakubek <stano.jakubek@gmail.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Link: https://lore.kernel.org/r/20230527141222.GA5048@standask-GA-A55M-S2HP


Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>