ARM: dts: allwinner: Minor whitespace cleanup

The DTS code coding style expects exactly one space around '=' or '{'
characters.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patch.msgid.link/20250819131752.86948-2-krzysztof.kozlowski@linaro.org


Signed-off-by: Chen-Yu Tsai <wens@csie.org>