arm64: dts: renesas: Minor whitespace cleanup around '='

The DTS code coding style expects exactly one space before and after '='
sign.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230702185252.44462-1-krzysztof.kozlowski@linaro.org


Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>