arm64: dts: exynos: adjust DT style of ufs nodes in ExynosAutov9

arm64: dts: exynos: adjust DT style of ufs nodes in ExynosAutov9

Drop "ufs0-" label name usage of ufs phy and hci nodes.
Regarding the comments of reg properties, we don't need to illustrate here
because we can find the description from the dt-binding doc.

Suggested-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Link: https://lore.kernel.org/r/20220602053250.62593-5-chanho61.park@samsung.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>