arm64: dts: exynos: switch UFS clock node in ExynosAutov9

Use cmu_fsys's clock node instead of dummy UFS clock node.

Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Link: https://lore.kernel.org/r/20220504075154.58819-13-chanho61.park@samsung.com


Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>