ARM: dts: exynos: Disable ARM PMU on Odroid XU3-lite

ARM Performance Monitoring Units (PMUs) are permanently disabled in the
Exynos5422 SoC version used on Odroid XU3-lite boards. Disable them in
boards dtb to avoid confusing user and getting following warning on boot:

hw-breakpoint: Failed to enable monitor mode on CPU 0

Signed-off-by: Marek Szyprowski <[e-mail]>
Signed-off-by: Krzysztof Kozlowski <[e-mail]>

arch/arm/boot/dts/exynos5422-odroidxu3-lite.dts

···
 	compatible = "hardkernel,odroid-xu3-lite", "samsung,exynos5800", "samsung,exynos5";
 };
 
+&arm_a7_pmu {
+	status = "disabled";
+};
+
+&arm_a15_pmu {
+	status = "disabled";
+};
+
 &pwm {
 	/*
 	 * PWM 0 -- fan