ARM: dts: vf: vf610-zii-cfu1: rename node name *-gpio to *-gpios

Rename node name *-gpio to *-gpios to fix below CHECK_DTB warning:

arch/arm/boot/dts/nxp/vf/vf610-zii-cfu1.dtb: sfp (sff,sff):
    'los-gpio', 'tx-disable-gpio' do not match any of the regexes: 'pinctrl-[0-9]+'

Signed-off-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

Author: nxpfrankli

arch/arm/boot/dts/nxp/vf/vf610-zii-cfu1.dts

@@ -68,8 +68,8 @@
 		pinctrl-0 = <&pinctrl_optical>;
 		pinctrl-names = "default";
 		i2c-bus = <&i2c0>;
-		los-gpio = <&gpio4 4 GPIO_ACTIVE_HIGH>;
-		tx-disable-gpio = <&gpio3 22 GPIO_ACTIVE_HIGH>;
+		los-gpios = <&gpio4 4 GPIO_ACTIVE_HIGH>;
+		tx-disable-gpios = <&gpio3 22 GPIO_ACTIVE_HIGH>;
 	};
 
 	supply-voltage-monitor {