arm64: dts: rockchip: fix regulator name on rk3328-rock64

Update regulator-name to match node and schematics.
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/rk3328-rock64.dts

@@ -218,7 +218,7 @@ regulator-state-mem {
 			};
 
 			vcc_18: LDO_REG1 {
-				regulator-name = "vdd_18";
+				regulator-name = "vcc_18";
 				regulator-min-microvolt = <1800000>;
 				regulator-max-microvolt = <1800000>;
 				regulator-always-on;
@@ -230,7 +230,7 @@ regulator-state-mem {
 			};
 
 			vcc18_emmc: LDO_REG2 {
-				regulator-name = "vcc_18emmc";
+				regulator-name = "vcc18_emmc";
 				regulator-min-microvolt = <1800000>;
 				regulator-max-microvolt = <1800000>;
 				regulator-always-on;