arm64: dts: rockchip: 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>
Link: https://lore.kernel.org/r/20200830201112.1934-1-freifunk@adrianschmutzler.deSigned-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/rk3368-evb.dtsi

@@ -134,7 +134,7 @@ &gmac {
 	pinctrl-0 = <&rmii_pins>;
 	tx_delay = <0x30>;
 	rx_delay = <0x10>;
-	status = "ok";
+	status = "okay";
 };
 
 &i2c0 {

arch/arm64/boot/dts/rockchip/rk3368-orion-r68-meta.dts

@@ -183,7 +183,7 @@ &gmac {
 	snps,reset-delays-us = <0 10000 1000000>;
 	tx_delay = <0x30>;
 	rx_delay = <0x10>;
-	status = "ok";
+	status = "okay";
 };
 
 &i2c0 {

arch/arm64/boot/dts/rockchip/rk3368-r88.dts

@@ -167,7 +167,7 @@ &gmac {
 	pinctrl-0 = <&rmii_pins>;
 	tx_delay = <0x30>;
 	rx_delay = <0x10>;
-	status = "ok";
+	status = "okay";
 };
 
 &i2c0 {
@@ -198,7 +198,7 @@ hym8563: hym8563@51 {
 };
 
 &io_domains {
-	status = "ok";
+	status = "okay";
 
 	audio-supply = <&vcc_io>;
 	gpio30-supply = <&vcc_io>;