arm64: dts: broadcom: replace status value "ok" by "okay"

While the DT parser recognizes "ok" as a valid value for the
"status" property, it is actually mentioned nowhere. Use the
proper value "okay" instead, as done in the majority of files
already.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

arch/arm64/boot/dts/broadcom/stingray/bcm958742-base.dtsi

@@ -151,7 +151,7 @@
 };
 
 &nand {
-	status = "ok";
+	status = "okay";
 	nandcs@0 {
 		compatible = "brcm,nandcs";
 		reg = <0>;