ipq40xx: spi-gpio: convert deprecated binding

The old gpio-{sck,miso and mosi} binding is
deprecated in favour of {sck,miso and mosi}-gpios.

Signed-off-by: Christian Lamparter <[email protected]>

target/linux/ipq40xx/files-4.19/arch/arm/boot/dts/qcom-ipq4018-ex61x0v2.dtsi

@@ -101,8 +101,8 @@
 		#address-cells = <1>;
 		#size-cells = <0>;
 
-		gpio-sck = <&tlmm 5 GPIO_ACTIVE_HIGH>;
-		gpio-mosi = <&tlmm 4 GPIO_ACTIVE_HIGH>;
+		sck-gpios = <&tlmm 5 GPIO_ACTIVE_HIGH>;
+		mosi-gpios = <&tlmm 4 GPIO_ACTIVE_HIGH>;
 		num-chipselects = <0>;
 
 		led_gpio: led_gpio@0 {