arm: dts: increase max vdd cpu to 1.45v

to support 1.8g

Change-Id: I9d7e7885a8f53b163224343c4b598ed837a99477
Signed-off-by: Jacob Chen <jacob2.chen@rock-chips.com>

Author: wzyy2

arch/arm/boot/dts/rk3288-miniarm.dts

@@ -277,7 +277,7 @@
 				regulator-always-on;
 				regulator-boot-on;
 				regulator-min-microvolt = <750000>;
-				regulator-max-microvolt = <1350000>;
+				regulator-max-microvolt = <1450000>;
 				regulator-name = "vdd_arm";
 				regulator-ramp-delay = <6000>;
 				regulator-state-mem {