ARM: dts: clearfog: fix sdhci supply property name

The vmmc phandle, like all power supply property names, must have the
'-supply' suffix.
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>

arch/arm/boot/dts/armada-388-clearfog.dtsi

@@ -48,7 +48,7 @@ sdhci@d8000 {
 					     &clearfog_sdhci_cd_pins>;
 				pinctrl-names = "default";
 				status = "okay";
-				vmmc = <&reg_3p3v>;
+				vmmc-supply = <&reg_3p3v>;
 				wp-inverted;
 			};