update the cooling level for cpu0 to avoid following message.

root@odroidxu3:~# dmesg | grep ther
[    0.241511] /thermal-zones/cpu-thermal/cooling-maps/map0:
                         could not get #cooling-cells for /cpus/cpu@0

Tested on OdroidXU3

Changes since v1 : None
Changes since v2 : None
Changes since v3 : None

Tested-by: Markus Reichl <m.rei...@fivetechno.de>
Acked-by: Lukasz Majewski <l.majew...@samsung.com>
Signed-off-by: Anand Moon <linux.am...@gmail.com>
---
 arch/arm/boot/dts/exynos5420.dtsi | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm/boot/dts/exynos5420.dtsi 
b/arch/arm/boot/dts/exynos5420.dtsi
index c0e98cf..6b49f3c 100644
--- a/arch/arm/boot/dts/exynos5420.dtsi
+++ b/arch/arm/boot/dts/exynos5420.dtsi
@@ -61,6 +61,10 @@
                        reg = <0x0>;
                        clock-frequency = <1800000000>;
                        cci-control-port = <&cci_control1>;
+
+                       cooling-min-level = <10>;
+                       cooling-max-level = <7>;
+                       #cooling-cells = <2>; /* min followed by max */
                };
 
                cpu1: cpu@1 {
-- 
1.9.1

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