ARM: dts: vf610: align SPI node name with dtschema

The node names should be generic and DT schema expects certain pattern.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/vf610-bk4.dts

@@ -61,7 +61,7 @@ reg_vcc_3v3_mcu: regulator-vcc3v3mcu {
 		regulator-max-microvolt = <3300000>;
 	};
 
-	spi-gpio {
+	spi {
 		compatible = "spi-gpio";
 		pinctrl-0 = <&pinctrl_gpio_spi>;
 		pinctrl-names = "default";

arch/arm/boot/dts/vf610-zii-dev-rev-b.dts

@@ -288,7 +288,7 @@ mdio_mux_8: mdio@8 {
 		};
 	};
 
-	spi0 {
+	spi-0 {
 		compatible = "spi-gpio";
 		pinctrl-0 = <&pinctrl_gpio_spi0>;
 		pinctrl-names = "default";