arm: dts: sc598: disable Octal SPI flash

Disable the OSPI on EZKIT so the SPI flash on the SoM can be
used, since they have conflicting signals.

Fixes: 7210fc6 ("board: adi: Add support for SC598")
Signed-off-by: Ozan Durgut <ozan.durgut@analog.com>

Author: ozan956

arch/arm/dts/sc598-som-ezkit.dts

@@ -79,7 +79,7 @@
 		octal {
 			gpio-hog;
 			gpios = <8 GPIO_ACTIVE_LOW>;
-			output-high;
+			output-low;
 			line-name = "octal-spi-cs-en";
 			bootph-pre-ram;
 		};