ARM: dts: rockchip: increase vdd_arm voltage for rk3066a based boards

The current vdd_arm voltage is too low, increase it will make
the system more stable.
Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm/boot/dts/rk3066a.dtsi

@@ -61,11 +61,13 @@ cpu0: cpu@0 {
 			reg = <0x0>;
 			operating-points = <
 				/* kHz    uV */
-				1008000 1075000
-				 816000 1025000
-				 600000 1025000
-				 504000 1000000
-				 312000  975000
+				1416000 1300000
+				1200000 1175000
+				1008000 1125000
+				816000  1125000
+				600000  1100000
+				504000  1100000
+				312000  1075000
 			>;
 			clock-latency = <40000>;
 			clocks = <&cru ARMCLK>;