ARM: dts: exynos: use generic node names for phy

Align HDMI and USB phy node names with bindings expectation.

Link: https://lore.kernel.org/r/20230125094513.155063-6-krzysztof.kozlowski@linaro.org


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