ARM: dts: rockchip: correct the name of REG8 for rk3288-evb-act8846

According to the schematic, the name of REG8 should be vcc_tp, rather
than vcca_tp.
Signed-off-by: Chris Zhong <zyw@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm/boot/dts/rk3288-evb-act8846.dts

@@ -152,7 +152,7 @@ vcca_codec: REG7 {
 				regulator-always-on;
 			};
 
-			vcca_tp: REG8 {
+			vcc_tp: REG8 {
 				regulator-name = "VCCA_TP";
 				regulator-min-microvolt = <3300000>;
 				regulator-max-microvolt = <3300000>;