ARM: dts: update vdd_arm voltage range for exynos4412 based boards

To allow EXYNOS4412 based Odroidx and Origen-quad boards to operate between
200MHz to 1.4Ghz, update the vdd_arm voltage range to operate between these
cpu clock speeds.

Cc: Dongjin Kim <tobetter@gmail.com>
Signed-off-by: Thomas Abraham <thomas.ab@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

arch/arm/boot/dts/exynos4412-odroidx.dts

@@ -251,7 +251,7 @@
 				buck2_reg: BUCK2 {
 					regulator-name = "vdd_arm";
 					regulator-min-microvolt = <900000>;
-					regulator-max-microvolt = <1300000>;
+					regulator-max-microvolt = <1350000>;
 					regulator-always-on;
 					regulator-boot-on;
 				};

arch/arm/boot/dts/exynos4412-origen.dts

@@ -459,8 +459,8 @@
 
 				buck2_reg: BUCK2 {
 					regulator-name = "vdd_arm";
-					regulator-min-microvolt = <925000>;
-					regulator-max-microvolt	= <1300000>;
+					regulator-min-microvolt = <900000>;
+					regulator-max-microvolt	= <1350000>;
 					regulator-always-on;
 					regulator-boot-on;
 					op_mode = <1>; /* Normal Mode */