arm64: dts: exynos: add missing space before {

Add missing whitespace between node name/label and opening {.

Link: https://lore.kernel.org/r/20230705145942.293527-1-krzysztof.kozlowski@linaro.org


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