ARM: 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>

arch/arm/boot/dts/microchip/lan966x-pcb8290.dts

@@ -28,7 +28,7 @@ &aes {
 &gpio {
 	miim_a_pins: mdio-pins {
 		/* MDC, MDIO */
-		pins =  "GPIO_28", "GPIO_29";
+		pins = "GPIO_28", "GPIO_29";
 		function = "miim_a";
 	};