arm64: dts: microchip: 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: Steen Hegelund <Steen.Hegelund@microchip.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230702185108.43959-1-krzysztof.kozlowski@linaro.org
[claudiu.beznea: added link]
Signed-off-by: Claudiu Beznea <claudiu.beznea@tuxon.dev>